Tell me how you could do A/B test if we see a 3% increase in usage for the product?

Hard Difficulty

Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.

Statistics question

Statistics questions assess your understanding of data analysis principles. Show your knowledge of probability, statistical inference, experimental design, and how you apply quantitative methods to interpret data and draw valid conclusions.

Here's a Hint

Explain the statistical approach for validating small percentage changes, including power analysis, sample size determination, and controlling for false positives.