Class 11, Video 1: The Second Moment Method
Автор: Mary Wootters
Загружено: 2022-05-17
Просмотров: 1599
Описание:
The second moment method is an extremely useful tool in probability theory! It can be used to show that a random variable has a positive probability of being positive.
Erratum: Around minute 3:00, it says "P(X=0) \leq P( |X - E(X)| \gt E(X) )", but it should say "P(X=0) \leq P( |X - E(X)| \geq E(X) )", with a greater-than-or-equal-to in the probability on the right hand side. (Here I'm using LaTeX notation for "greater than" etc, since YouTube won't let me use the greater-than sign in the description).
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