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Expectation: typo in equation #19

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alphaville opened this issue May 14, 2017 · 1 comment
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Expectation: typo in equation #19

alphaville opened this issue May 14, 2017 · 1 comment
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@alphaville
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On page 9 it is written that two variables have the same expectation (E[X] = E[Y]) if and only if they are almost surely equal (P[X=Y]=1). However, we may have two random variables X, Y which have the same expectation, even the same distribution, but are almost surely not equal - take X~N(0,1) and Y=-X.

I believe you meant to write P[X=Y] = 1 => E[X] = E[Y].

@mavam mavam added the bug label May 15, 2017
@mavam
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mavam commented May 15, 2017

Thanks for submitting the issue. This is indeed a typo and I'll fix it shortly.

@mavam mavam closed this as completed in f940790 May 15, 2017
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