Data Science Interview Questions & Assessment
Assess data science skills including statistical analysis, hypothesis testing, A/B testing, data visualization, and storytelling.
Why Data Science Matters
Data science drives decision-making at every major company. Data scientists help organizations understand their users, optimize products, and identify growth opportunities.
Sample Interview Questions
Explain A/B testing. How do you determine sample size and statistical significance?
What is the Central Limit Theorem and why is it important?
You notice a metric dropped 10% week-over-week. How would you investigate?
Explain the difference between correlation and causation with a real-world example.
How would you design a recommendation system? Compare collaborative and content-based filtering.
How to Prepare
Master pandas and numpy for data manipulation
Know statistical concepts: distributions, hypothesis testing, p-values
Practice data visualization with matplotlib, seaborn, or plotly
Be comfortable with SQL for data extraction and analysis
Practice the STAR method for behavioral data science questions
Related Skills
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