Execution · Difficulty 4/5

Choose a minimum detectable effect

A PM interview practice question for SENIOR, STAFF candidates.

The prompt

Your team is debating MDE for a redesign experiment: 1%, 2%, or 4%. Frame the trade-off (runtime vs. risk vs. learning) and recommend a defensible choice for a 1M-MAU consumer app.

Concepts this question tests

How to practice it in PrepOS

PrepOS's adaptive queue surfaces this question when you calibrate to a matching target level and your weakest concepts overlap with what it tests. Open the practice simulator and select the round type to start a rep with this prompt.

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Round: Execution
Target levels: SENIOR, STAFF
Source: original · Reviewed by PrepOS seed