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M2 — Stats + A/B Checkpoint
Distributions-to-tests pointer, A/B writeup article, stats skip-gate, readout checkpoint submission.
Module Content
Distributions to Hypothesis Tests Pointer
Outcome: pick the correct test for 3 scenarios. Curated video (9:33, verified 2026-09-24 via yt-dlp): Statistical Tests: Choosing which statistical test to use (Dr Nic's Maths and Stats) Watch: https://www.youtube.com/watch?v=rulIUAN0U3w Notes: Decision flow via three questions (data type, samples, purpose). Covers: test for a mean, test for a proportion, difference of proportions, difference of two means (independent + paired), chi-squared independence, regression. Direct drill for the 3-scenario test-pick outcome. Key moments: 0:00 Intro; 0:21 Three questions; 0:42 Data; 2:01 Samples; 2:59 Purpose.
A/B-Test Writeup (AB-Test49 Pattern)
Write SRM + peeking + readout section. Pointer: stats-product-analytics; WE W2.
Quiz: Stats Skip-Gate
10 scenario MCQs incl CUPED/Simpson/permutation/DiD. Pass >= 80. Exit-battery bank C.
A/B-Test Writeup Checkpoint
Defend one readout (SRM/peeking addressed). homepage_ab_test.csv + 100-pt rubric inside.