Difficulty Distribution
Skills You'll Practice (9)
All 3 Scenarios
Click any scenario to practice it. No account required.
Revenue Dropped 15% This Week
The CEO calls you on a Thursday: 'Revenue this week is 15% lower than last week and 20% lower than the same week last year. I need answers by tomorrow morning's board meeting.' You have access to the database with sales, orders, user data, and marketing spend. Walk me through how you'd approach this analysis.
Design A/B Test for New Checkout
Product wants to A/B test a new checkout flow. Design the experiment: what metric to measure, how to split traffic, sample size calculation, how long to run, what would make you stop early, how to determine winner.
Marketing Attribution Disagreement
Marketing claims their Facebook campaign drove $500K in revenue last month. Finance says it drove $180K. Both look at 'attribution' but come to wildly different numbers. Walk me through how you'd reconcile this and present a definitive answer.