Data Science

# 30 Statistics Interview Questions to Prep For Your Interview

17 minute read | November 30, 2022

Written by:
Maria Muntean

At some point in the data science job interview process, you’re going to have to sit down for a technical interview. And chances are that you’ll be asked a few questions about statistics, given that statistics is both foundational to the field of data science and because data science use statistics frequently and on a daily basis.

This interview can be one of the most daunting parts of the entire interview process. With a portfolio, you can spend as much as you have tinkering with the projects that show off your best work. With an interview, you have to be able to think on your feet.

If that sounds anxiety-inducing, then you’re in the right place. Below, we’ve detailed thirty of the most common statistics interview questions that data science candidates get asked. Study these questions, and you’ll be well on your way to acing the interview and landing your dream job.

## What’s the Best Way To Practice Statistics Interview Questions?

The best way to practice statistics interview questions is to learn and understand the fundamentals of statistics rather than just memorizing answers. You should also practice answering questions in a clear and concise way, to show that you can think critically when under pressure.

## Technical Statistics Interview Questions

Here are some of the most common questions asked during the interview process and how to answer them.

### What Are Some Key Concepts in Statistics?

Statistics is the study of data. It’s an important field that helps scientists, analysts, and researchers make sense of large amounts of information. There are several key concepts in statistics that can help you better understand what it is and how it works.

We’ll discuss four of them here: population and sample, standard deviation, covariance and correlation, and probability.

A population is a collection of elements that have specific characteristics in common. For example, all the people who live in a particular city are part of that city’s population. A sample is a subset of the population being studied. It has been selected to reflect the characteristics of the population as a whole but is not necessarily representative of the entire group.

Standard deviation measures how far away from the average value for a set of values something is likely to be. It’s calculated by taking all those values, finding their mean (average) value, and then calculating their percentage from that mean value.

Covariance and correlation measure how two sets of data relate to each other; they represent whether there’s any kind of pattern between them or whether one set causes changes in another set over time by using random variables.

Finally, probability represents how likely something might happen given certain conditions or how unlikely it would be given those same conditions (for example: “The probability that it will rain tomorrow is 30%”).

### What Are Descriptive Statistics?

Descriptive statistics are a set of numbers that describe a group or population, and they’re usually used to summarize information about a set of data.

For example, if you’re looking at the average height of the male population in your country, you might use descriptive statistics to find out that the mean height is 5’11”. Descriptive statistics can be used to describe any kind of data—from test scores to how much money a company makes during a year.

### What Is the Difference Between Inferential Statistics and Descriptive Statistics?

The difference between inferential statistics and descriptive statistics is that inferential statistics are used to draw conclusions about a population based on the data you’ve collected. In contrast, descriptive statistics are used to summarize your data.

### What Is the Difference Between Population and Sample in Inferential Statistics?

In inferential statistics, the difference between population and sample is that a population is the complete set of objects in a specific category. In contrast, a sample is a subset of that category.

You can think about it like this: if you have a jar full of marbles, the entire contents of the jar are the “population”—that’s all the marbles. But if you randomly remove ten marbles from the jar, those ten marbles are your “sample.”

### What Is the Difference Between Quantitative Data and Qualitative Data?

Quantitative data is numerical data that can be measured, counted, and expressed as a percentage. For example, if you have 100 people in a room, how many of them are women? If you ask them to fill out a survey and write down their age and gender, that would be quantitative data.

Qualitative data is non-numerical information that describes subjective experiences or opinions about an event or topic. Qualitative data can be examined using methods like surveys and interviews. For example, if you wanted to understand how people feel about sports, you might ask them questions like: “What kind of sports do you like?” or “How much time do you spend watching sports?”

### Explain the Central Limit Theorem.

The Central Limit Theorem is a mathematical principle describing how the mean of a large number of samples approaches their population mean as the sample size increases.

It’s important because it can be used to test an alternative hypothesis about populations by looking at the means of random samples from those populations.

For example, if you gather 100 samples from a population and find that they all have a mean equal to some number, you can conclude that the population’s mean is also equal to that number.

#### Get To Know Other Data Science Students

Jonah Winninghoff

Statistician at Rochester Institute Of Technology

### What Is Sampling? What Are the Different Sampling Methods? List Some Examples of Sampling Biases.

Sampling is collecting information from a population to make inferences about the whole. It’s used in statistical analysis, scientific research, and other fields.

There are many different sampling methods: simple random sampling, stratified random sampling, systematic sampling, cluster sampling, convenience sampling (also known as judgmental or non-probability sampling), and quota sampling. These methods have their strengths and weaknesses that can result in some form of selection bias.

Sampling bias occurs when the sample does not represent the population it is supposed to represent. This can happen if the sample is too small or biased towards certain groups of people who are more likely to answer questions or participate in surveys.

Some examples of biases that can occur in a sample include:

• Self-selection: where people volunteer for a study because they believe they will benefit from it (e.g., they want to win a prize);
• Recruiting at places where people tend to congregate (e.g., bars).

### How Do You Calculate Range and Interquartile Range?

Range and interquartile range are two ways to calculate the spread of data. The range is the difference between the highest and lowest value in a set of data. The interquartile range is the difference between the 75th percentile and 25th percentile of a set of data.

To calculate the interquartile range, first, you need to sort your data from smallest to largest. Then find the 75th percentile by calculating three-quarters of the way across your sorted list (i.e., 3/4 = .75). Next, find 25% of your sorted list by calculating one-fourth of the way across your sorted list (i.e., 1/4 = .25). Finally, subtract these numbers; this is your interquartile range.

To calculate the range: find the absolute value difference between each number in your list and add all those differences.

### What’s the 5-number Summary, and How Do We Visualize It?

The five-number summary is a statistical description of a data set. It consists of the smallest value, the largest value, the median, the first quartile, and the third quartile.

The five-number summary can be visualized with box plots or histograms. A box plot shows the normal distribution of data using boxes extending from one quantile (the 25th percentile) to another (the 75th percentile). A histogram shows the distribution by giving equal area to bars representing each value in a data set.

### What Is the Relationship Between Standard Deviation and Variance?

Standard deviation and variance are statistical measures of how values within a data set are distributed. The standard deviation measures the average distance between each value in the data set and the mean, while variance measures how much each value in the data set varies around its mean.

The standard deviation is always greater than or equal to the variance, regardless of which method is used to calculate either. This is because standard deviation accounts for only one measure of dispersion (distance from the mean), whereas variance accounts for two: distance from the mean and each other.

### Explain the Following:

#### Pareto Principle

The Pareto Principle, also known as the 80-20 rule, is a principle that states that 20% of causes are responsible for 80% of effects.

The principle was named after Italian economist Vilfredo Pareto, who noticed that 80% of his country’s land was owned by 20% of the population. He found this to be true in other places and industries as well—that a small portion of causes (and effects) were responsible for a large portion of what happens.

In statistics, this means that while many variables are at play in any situation, only a few will account for most of the results you see. For example, suppose you wanted to predict how many people will come to an event based on how much money you spend on advertising alone. In that case, you’d need to know which variables accounted for most of the total amount spent on advertising (e.g. which variables had the most significant impact).

#### Three-Sigma Rule

The Three-Sigma Rule is a statistical concept that states that if you have a sample of data and want to determine the probability that the average of your sample will fall within three standard deviations of the actual value, you must calculate the appropriate z-score using a normal distribution.

For example, we have a sample of five values, and they are 2, 5, 7, 10, and 11. The average of those values is 6.2. Let’s say we want to determine our chances that this average will fall within three standard deviations of the true value, which would be between 6.5 and 7.5. We can do this by calculating Z = (6 – 6.5) / 0.5 = -0.1, then plugging this into our calculator to find that our chances are about 70%.

#### Law of Large Numbers

The Law of Large Numbers states that the average of many trials is close to the expected value. It is a fundamental principle of probability theory used to describe how an experiment’s results converge on the true value as more and more trials are conducted.

### What Are Left-Skewed Distribution and Right-Skewed Distribution?

Left-skewed distributions have a longer tail to the left (lower values), while right-skewed distributions have a longer tail to the right (higher values).

For example, if you were looking at the distribution of test scores on an exam, a left-skewed distribution would mean that more students scored lower than average than higher than average. A right-skewed distribution would mean that more students scored higher than average than lower than average.

### What Is an Outlier, and How Can You Find One?

An outlier is an observation point that is distant from other data points. It’s important to note that the term “outlier” doesn’t refer to the numerical value of a data point but rather the distance between it and all other values.

You can use statistical tools like box plots or stem-and-leaf plots to find outliers in your dataset.

### Describe:

#### Cherry-Picking

Cherry-picking is a term used in statistics to describe the practice of selecting data points that support a conclusion. It’s also called data mining or using an inappropriate statistical test.

In statistics, cherry-picking can be done intentionally or unintentionally. If a researcher wants to prove that one treatment is better, they might use only the data points that support their claim and discard any that don’t fit their narrative. On the other hand, if a researcher doesn’t know what they’re doing or doesn’t realize that they’re making decisions about what data points to include and exclude, they could accidentally be cherry-picking their data set.

#### P-Hacking or Data Dredging

Source: geckoboard

P-hacking or Data Dredging is manipulating data to get the desired result. You can do this by changing the way you analyze your data until you get the desired outcome. This is not a good way to conduct research because it means that you’re not actually looking at your data objectively, and you’re more likely to find false positives (results that seem significant but are not).

#### Significance Chasing

Significance chasing is the practice of using statistics to confirm a hypothesis rather than using it to explore unproven ideas. This is done by setting a very low threshold for significance and then either finding barely statistically significant results or manipulating data to achieve statistical significance.

Significance chasing is unethical and ineffective because it leads researchers to draw conclusions that are not well-supported by the data.

### If Four Coins Are Tossed Simultaneously, What Is the Possibility of Getting Three Heads and One Tail?

The probability of getting three heads and one tail is ¼ or 25%.

### How Many Possible Permutations Does a License Plate With 5 Digits Have?

There are 100,000 permutations of a license plate with five digits. This can be found by multiplying the number of possible digitals (ten) five times.

### Take a Fair Dice. On Average, How Many Times Must You Roll the Dice Before Rolling a Six?

On average, you’ll need to roll the dice about four times before you land on six.

### How Would You Go About Finding the Mean Height of Women in the World?

To find the mean height of women worldwide, you should gather data from surveys of women across all countries. Then, use appropriate statistical methods to calculate an average for each country. Finally, create a mean for all countries combined using these numbers and mathematical formulas.

### Two Fair Dice Are Rolled Together. What Is the Probability of Getting a Total Of:

3

The probability of getting a total of 3 when two fair dice are rolled together is 1/18. This is because there are 36 possible outcomes when two dice are rolled, and only two of them result in a three.

10

The probability of getting a total of 10 when two fair dice are rolled together is 1/9. This is because there are 36 possible outcomes for the roll, and four of them result in a 10.

### You Have To Draw Three Cards Successively From a Full Deck of Cards. What Is the Probability That You Draw a Face Card, a Seven, and a Two in That Order?

The probability that you draw a face card, a seven, and a two in that order is 1/676. You can find this by multiplying the chances of pulling each card respectively.

There are twelve face cards in a deck, so the chance of pulling a face card is 1/4.

There are only four seven cards in a deck, so the chance of pulling a seven is 1/13.

There are only four two cards in a deck, so the chance of pulling a two is also 1/13.

### How Would You Go About Choosing a Sample Size?

There are a few ways to choose the sample size, but the most common method is to use the margin of error (ME) formula. The margin of error is the amount of error expected in your result. You can use this formula to determine the desired sample size.

Choose a sample size by first identifying the population of interest. Then, decide on a sample size that will allow you to represent that population accurately.

A good rule of thumb is to have a maximum sample of around 10% of the population.

### Why Is Bessel’s Correction Important?

Bessel’s correction is important because it allows us to solve differential equations, which tell you how an unknown function (the output) changes in time or space depending on the values of the dependent variables (the inputs).

## General Statistics Interview Questions

Questions about statistics are common in many data science interviews. These questions help employers gain insight into your ability to perform statistical analysis, your understanding of the fundamentals of data analysis, and your ability to communicate knowledge of statistics.

Related Read: Data Science Interview Preparation: 7 Tips to Succeed

### Tell Me About Yourself.

This is an opportunity for the interviewer to get a sense of who you are, what motivates you, and what kind of person they might be working with.

Keep this answer succinct, though it’s essential to remember that the person asking this question wants to know more about who you are, not just your job history. In addition to describing your background and education, consider what aspects of your personality make you unique and interesting.

### What Made You Choose a Career in Data?

When answering this question, consider how your answer will help the interviewer get to know you better. If specific things about your personality or background make you well-suited for this type of work, now is the time to bring them up.

Tell them about hobbies or past experiences that relate directly to what you do now. For example: “I’ve always been interested in data science because it allows me to put my love of math and science into practice.” Or “I’ve always been fascinated by statistics because they allow us all to think critically about the world around us.”

### What Have You Done To Improve Your Skills in Statistics?

Talk about your qualifications, such as data science online courses or bootcamps. Mention all the accreditations and how these courses helped you learn more about the topic.

It’s always a good idea to talk about your experience, such as working with data sets provided by companies online. This experience gives you an idea of how these companies collect data from their customers, what information they look at when making decisions about their products or services, and how they use this information to improve their business.

### What Statistical Analysis Software Are You Familiar With?

When asked about software, you want to highlight the fact that you’re familiar with a variety of software. You should also highlight your analytical thinking and problem-solving skills, as these are two key traits employers look for when hiring statisticians.

You might say, “I’m familiar with both Excel and Stata. I’ve used them for statistical analysis in different fields, including economics, psychology, and ecology.”

You could also mention that you have experience using other software packages such as SPSS or R (or both).

### What Differentiates You From Other Candidates Applying for This Role?

The ability to differentiate yourself from other candidates is an important skill, especially in a job interview. It’s important to explain how your background, experience, and skills make you stand out from other applicants.

Try using examples from your experience or personal life that illustrate how you’ve been able to accomplish something unique or challenging.

For example, if you’re applying for a job as a statistician, you could talk about how you helped manage the data collected by an extensive survey project back when you worked at the local health department. Or, if you’re applying for a role in marketing research, talk about how you were able to help develop the first-ever mobile app for collecting customer feedback on a new product line.

### How Would Your Boss and Colleagues Describe You?

If you’re applying to a statistics job, you might be asked how your boss and colleagues would describe you. This is a great chance to show what kind of person you are. It’s important to be honest and friendly but also confident and professional.

You can talk about the things you like doing outside work, like sports or hobbies. You can mention that your boss is impressed by your ability to think creatively and solve problems. You may also mention that others have described you as organized or detail-oriented.

Be specific. Don’t say that you’re a hard worker. Explain how much effort you put into every task. Don’t say you’re organized—explain how much time it takes to stay organized and how efficient it makes your workday. Use examples from past jobs or internships to illustrate these qualities.

### What Does Your Ideal Career Path Look Like? How Do You See This Role Helping You Achieve That?

You may be asked to talk about your ideal career path during a statistics job interview. This is an excellent opportunity to show your potential employer that you have thought about how this role will help you achieve your goals.

First and foremost, it’s important not to get too general. Instead of saying, “I want to be a statistician,” say something like, “I love working with data and statistics, and I’m excited to see where this role can take me.”

Next, consider what qualities you’d like to develop or hone to reach your goals. For example, if you want to work as a statistician in a lab setting, you should mention that you’re interested in developing long-term planning or goal-setting capacity. Or, if you’re interested in applying statistics to business settings, mention that you’d like some experience managing projects or setting priorities.

Finally, don’t forget about the skills required for this position! Just because someone has the title “statistician” doesn’t mean they know everything there is to know about using math equations—there are other areas of expertise that could come into play depending on where they work (e.g., programming).

### Do You Have Any Questions for Us?

This is a favorite question of hiring managers. It’s a way to end an interview on a positive note and ensure that you leave with a good feeling about the company.

However, it can be tricky to come up with questions, especially if you’re nervous about not knowing enough about the position or company. Here are some tips for answering this question effectively:

• Be prepared for the question by considering what things would be essential to know about the position or company before accepting an offer. For example, do they use any specific programs or technology? Do they have a lot of travel required? Do they expect employees to stay late sometimes? Make sure these questions are answered before asking them!
• Show interest in their business and culture by asking questions related to those topics (for example: “What is your favorite part about working here?” or “How did you get started in your field?”).

## FAQs About Statistics Interview Questions

We’ve got the answers to your most frequently asked questions.

### How Do I Prepare for a Statistics Interview?

Preparing for a statistics interview is a lot like preparing for any other job interview: You want to ensure you’re prepared and confident. The best way to get ready is to practice answering questions, so try making up some sample questions and coming up with answers that you think would work in an interview.

You should also spend some time brushing up on the basics of statistics, including what it is, how it’s used in business and government, and what kinds of jobs use statistics.

### Is a Statistics Interview Difficult?

A statistics interview can be difficult, but there are ways to help you prepare.

First, you need to understand what the interviewer is looking for. A statistics interview is not just a test of your ability to answer questions correctly; the interviewer wants to know how well you can think on your feet and how quickly you can come up with creative solutions to complex problems. The more experience you have with statistics, the better off you’ll be in this type of interview.

Second, make sure that you show up well-prepared for any possible question that might come your way. This means having a solid understanding of statistics and data analysis techniques and applying these skills in new situations or unexpected circumstances. It’s important to be able to explain yourself clearly, so practice telling stories about your past experiences where those skills were used.

### How Long Does a Statistics Interview Generally Last?

In general, statistics interviews last between 30 minutes and an hour. However, this can vary depending on the length and complexity of the questions. It could take longer than an hour if they’re asking you to solve a problem or do data analysis.

### How Can You Stand Out in a Statistics Interview?

You can stand out in a statistics interview by being confident, honest, and prepared.

First, show that you’re confident by answering questions in a way that shows that you’re not afraid to speak up or ask for help when needed. For example, if the interviewer asks a question and you don’t understand it, don’t be afraid to say so.

Second, be honest about your strengths and weaknesses—and show how you’ve overcome them. For example, if there’s a particular skill or topic in which you aren’t as strong as others may be, explain how you’ve worked to get better at it over time.

Finally, ensure that you’re prepared with plenty of examples of how your past experience makes you the best candidate for the job and what makes those experiences relevant to the position.

Companies are no longer just collecting data. They’re seeking to use it to outpace competitors, especially with the rise of AI and advanced analytics techniques. Between organizations and these techniques are the data scientists – the experts who crunch numbers and translate them into actionable strategies. The future, it seems, belongs to those who can decipher the story hidden within the data, making the role of data scientists more important than ever.

In this article, we’ll look at 13 careers in data science, analyzing the roles and responsibilities and how to land that specific job in the best way. Whether you’re more drawn out to the creative side or interested in the strategy planning part of data architecture, there’s a niche for you.

## Is Data Science A Good Career?

Yes. Besides being a field that comes with competitive salaries, the demand for data scientists continues to increase as they have an enormous impact on their organizations. It’s an interdisciplinary field that keeps the work varied and interesting.

## 10 Data Science Careers To Consider

Whether you want to change careers or land your first job in the field, here are 13 of the most lucrative data science careers to consider.

### Data Scientist

Data scientists represent the foundation of the data science department. At the core of their role is the ability to analyze and interpret complex digital data, such as usage statistics, sales figures, logistics, or market research – all depending on the field they operate in.

They combine their computer science, statistics, and mathematics expertise to process and model data, then interpret the outcomes to create actionable plans for companies.

#### General Requirements

A data scientist’s career starts with a solid mathematical foundation, whether it’s interpreting the results of an A/B test or optimizing a marketing campaign. Data scientists should have programming expertise (primarily in Python and R) and strong data manipulation skills.

Although a university degree is not always required beyond their on-the-job experience, data scientists need a bunch of data science courses and certifications that demonstrate their expertise and willingness to learn.

#### Average Salary

The average salary of a data scientist in the US is \$156,363 per year.

### Data Analyst

A data analyst explores the nitty-gritty of data to uncover patterns, trends, and insights that are not always immediately apparent. They collect, process, and perform statistical analysis on large datasets and translate numbers and data to inform business decisions.

A typical day in their life can involve using tools like Excel or SQL and more advanced reporting tools like Power BI or Tableau to create dashboards and reports or visualize data for stakeholders. With that in mind, they have a unique skill set that allows them to act as a bridge between an organization’s technical and business sides.

#### General Requirements

To become a data analyst, you should have basic programming skills and proficiency in several data analysis tools. A lot of data analysts turn to specialized courses or data science bootcamps to acquire these skills.

For example, Coursera offers courses like Google’s Data Analytics Professional Certificate or IBM’s Data Analyst Professional Certificate, which are well-regarded in the industry. A bachelor’s degree in fields like computer science, statistics, or economics is standard, but many data analysts also come from diverse backgrounds like business, finance, or even social sciences.

#### Average Salary

The average base salary of a data analyst is \$76,892 per year.

Business analysts often have an essential role in an organization, driving change and improvement. That’s because their main role is to understand business challenges and needs and translate them into solutions through data analysis, process improvement, or resource allocation.

A typical day as a business analyst involves conducting market analysis, assessing business processes, or developing strategies to address areas of improvement. They use a variety of tools and methodologies, like SWOT analysis, to evaluate business models and their integration with technology.

#### General Requirements

Business analysts often have related degrees, such as BAs in Business Administration, Computer Science, or IT. Some roles might require or favor a master’s degree, especially in more complex industries or corporate environments.

Employers also value a business analyst’s knowledge of project management principles like Agile or Scrum and the ability to think critically and make well-informed decisions.

#### Average Salary

A business analyst can earn an average of \$84,435 per year.

The role of a database administrator is multifaceted. Their responsibilities include managing an organization’s database servers and application tools.

A DBA manages, backs up, and secures the data, making sure the database is available to all the necessary users and is performing correctly. They are also responsible for setting up user accounts and regulating access to the database. DBAs need to stay updated with the latest trends in database management and seek ways to improve database performance and capacity. As such, they collaborate closely with IT and database programmers.

#### General Requirements

Becoming a database administrator typically requires a solid educational foundation, such as a BA degree in data science-related fields. Nonetheless, it’s not all about the degree because real-world skills matter a lot. Aspiring database administrators should learn database languages, with SQL being the key player. They should also get their hands dirty with popular database systems like Oracle and Microsoft SQL Server.

#### Average Salary

Database administrators earn an average salary of \$77,391 annually.

### Data Engineer

Successful data engineers construct and maintain the infrastructure that allows the data to flow seamlessly. Besides understanding data ecosystems on the day-to-day, they build and oversee the pipelines that gather data from various sources so as to make data more accessible for those who need to analyze it (e.g., data analysts).

#### General Requirements

Data engineering is a role that demands not just technical expertise in tools like SQL, Python, and Hadoop but also a creative problem-solving approach to tackle the complex challenges of managing massive amounts of data efficiently.

Usually, employers look for credentials like university degrees or advanced data science courses and bootcamps.

#### Average Salary

Data engineers earn a whooping average salary of \$125,180 per year.

### Database Architect

A database architect’s main responsibility involves designing the entire blueprint of a data management system, much like an architect who sketches the plan for a building. They lay down the groundwork for an efficient and scalable data infrastructure.

Their day-to-day work is a fascinating mix of big-picture thinking and intricate detail management. They decide how to store, consume, integrate, and manage data by different business systems.

#### General Requirements

If you’re aiming to excel as a database architect but don’t necessarily want to pursue a degree, you could start honing your technical skills. Become proficient in database systems like MySQL or Oracle, and learn data modeling tools like ERwin. Don’t forget programming languages – SQL, Python, or Java.

If you want to take it one step further, pursue a credential like the Certified Data Management Professional (CDMP) or the Data Science Bootcamp by Springboard.

#### Average Salary

Data architecture is a very lucrative career. A database architect can earn an average of \$165,383 per year.

### Machine Learning Engineer

A machine learning engineer experiments with various machine learning models and algorithms, fine-tuning them for specific tasks like image recognition, natural language processing, or predictive analytics. Machine learning engineers also collaborate closely with data scientists and analysts to understand the requirements and limitations of data and translate these insights into solutions.

#### General Requirements

As a rule of thumb, machine learning engineers must be proficient in programming languages like Python or Java, and be familiar with machine learning frameworks like TensorFlow or PyTorch. To successfully pursue this career, you can either choose to undergo a degree or enroll in courses and follow a self-study approach.

#### Average Salary

Depending heavily on the company’s size, machine learning engineers can earn between \$125K and \$187K per year, one of the highest-paying AI careers.

### Quantitative Analyst

Qualitative analysts are essential for financial institutions, where they apply mathematical and statistical methods to analyze financial markets and assess risks. They are the brains behind complex models that predict market trends, evaluate investment strategies, and assist in making informed financial decisions.

They often deal with derivatives pricing, algorithmic trading, and risk management strategies, requiring a deep understanding of both finance and mathematics.

#### General Requirements

This data science role demands strong analytical skills, proficiency in mathematics and statistics, and a good grasp of financial theory. It always helps if you come from a finance-related background.

#### Average Salary

A quantitative analyst earns an average of \$173,307 per year.

### Data Mining Specialist

A data mining specialist uses their statistics and machine learning expertise to reveal patterns and insights that can solve problems. They swift through huge amounts of data, applying algorithms and data mining techniques to identify correlations and anomalies. In addition to these, data mining specialists are also essential for organizations to predict future trends and behaviors.

#### General Requirements

If you want to land a career in data mining, you should possess a degree or have a solid background in computer science, statistics, or a related field.

#### Average Salary

Data mining specialists earn \$109,023 per year.

### Data Visualisation Engineer

Data visualisation engineers specialize in transforming data into visually appealing graphical representations, much like a data storyteller. A big part of their day involves working with data analysts and business teams to understand the data’s context.

#### General Requirements

Data visualization engineers need a strong foundation in data analysis and be proficient in programming languages often used in data visualization, such as JavaScript, Python, or R. A valuable addition to their already-existing experience is a bit of expertise in design principles to allow them to create visualizations.

#### Average Salary

The average annual pay of a data visualization engineer is \$103,031.

## Resources To Find Data Science Jobs

The key to finding a good data science job is knowing where to look without procrastinating. To make sure you leverage the right platforms, read on.

### Job Boards

When hunting for data science jobs, both niche job boards and general ones can be treasure troves of opportunity.

Niche boards are created specifically for data science and related fields, offering listings that cut through the noise of broader job markets. Meanwhile, general job boards can have hidden gems and opportunities.

### Online Communities

Spend time on platforms like Slack, Discord, GitHub, or IndieHackers, as they are a space to share knowledge, collaborate on projects, and find job openings posted by community members.

### Network And LinkedIn

Don’t forget about socials like LinkedIn or Twitter. The LinkedIn Jobs section, in particular, is a useful resource, offering a wide range of opportunities and the ability to directly reach out to hiring managers or apply for positions. Just make sure not to apply through the “Easy Apply” options, as you’ll be competing with thousands of applicants who bring nothing unique to the table.

## FAQs about Data Science Careers

### Do I Need A Degree For Data Science?

A degree is not a set-in-stone requirement to become a data scientist. It’s true many data scientists hold a BA’s or MA’s degree, but these just provide foundational knowledge. It’s up to you to pursue further education through courses or bootcamps or work on projects that enhance your expertise. What matters most is your ability to demonstrate proficiency in data science concepts and tools.

### Does Data Science Need Coding?

Yes. Coding is essential for data manipulation and analysis, especially knowledge of programming languages like Python and R.

### Is Data Science A Lot Of Math?

It depends on the career you want to pursue. Data science involves quite a lot of math, particularly in areas like statistics, probability, and linear algebra.

### What Skills Do You Need To Land an Entry-Level Data Science Position?

To land an entry-level job in data science, you should be proficient in several areas. As mentioned above, knowledge of programming languages is essential, and you should also have a good understanding of statistical analysis and machine learning. Soft skills are equally valuable, so make sure you’re acing problem-solving, critical thinking, and effective communication.

Since you’re here…Are you interested in this career track? Investigate with our free guide to what a data professional actually does. When you’re ready to build a CV that will make hiring managers melt, join our Data Science Bootcamp which will help you land a job or your tuition back!

#### About Maria Muntean

Maria-Cristina is a content marketer with 7 years of experience in SEO and content strategy for SaaS and technology brands. She holds an MA thesis on the effects of emotions in written and video content. She loves to spend time near the ocean and watch horror movies.