Quiz•Data Science

100 Quiz for Data Science in 2026

How well do you know your data science fundamentals?

As an analyst, business professional, researcher, or career changer, you know that data science is a critical skillset. But do you have the confidence to tackle complex projects? Take this quiz to identify areas for improvement and get ahead in your data science journey.

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Statistics and Modeling

Test your understanding of statistical concepts and modeling techniques.

What is the purpose of hypothesis testing?

intermediate

Choose the correct answer.

hypothesis testingstatistics

How do you handle missing values in a dataset?

intermediate

Select the best approach.

data cleaningmissing values

Python and R

Compare your skills in Python and R for data science tasks.

Which library is used for data visualization in Python?

beginner

Choose the correct answer.

pythondata visualization

How do you perform linear regression in R?

intermediate

Write a short answer.

rlinear regression

Data Cleaning and Preprocessing

Evaluate your data cleaning and preprocessing skills.

What is the purpose of data normalization?

intermediate

Choose the correct answer.

data cleaningnormalization

How do you handle outliers in a dataset?

intermediate

Select the best approach.

data cleaningoutliers

Communication and Insights

Assess your ability to communicate insights to non-technical stakeholders.

What is the most effective way to present data insights to a non-technical audience?

intermediate

Choose the correct answer.

communicationinsights

How do you create a compelling data story?

advanced

Write a short answer.

communicationdata storytelling

Pro Tips

Use the 80/20 rule to focus on the most important data cleaning tasks.

This will help you prioritize your efforts and maximize your time.

Practice explaining complex data concepts to non-technical friends or family.

This will help you develop your communication skills and improve your ability to present insights effectively.

Frequently Asked Questions

What if I'm not familiar with a particular topic?

Don't worry! This quiz is designed to help you identify areas for improvement. Take note of the topics you struggle with and focus on learning those skills.

How do I get feedback on my answers?

We'll provide instant feedback on your answers, along with explanations and resources to help you improve.

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100 Quiz for Data Science in 2026