In this video, we will go over one of the top A/B testing questions I've seen in data science interviews: how to estimate sample size in A/B testing? This is the first video of a video series - Top A/B testing questions in Data Science interviews.

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️ Derivation of sample size equation - Statistical Rules of Thumb - Chapter 2: Sample Size http://vanbelle.org/chapters/webchapter2.pdf

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====================
Contents of this video:
====================
0:00 Intro
0:40 How A/B Testing Questions Appear in Interviews
2:03 Rule of thumb formula
3:20 Alpha (Significance Level)
4:15 Beta (Type II Error)
4:56 Variance
5:36 Delta
6:36 Summary

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