List questions from expectation

Published on 17 Feb 2016 - 1:59

32

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Expectations in scaled probability space

Published on 17 Feb 2016 - 13:38

318

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Expectation of log likelihood ratio

Published on 17 Feb 2016 - 17:34

1.5k

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expected value of multiplication of random matrices

Published on 28 Mar 2026 - 3:56

76

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What can we conclude if one of the odd moment is zero?

Published on 18 Feb 2016 - 14:35

48

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Why does $Var(Y) = Var(\sum_i^n W_iXi) = n(Var(W_i)Var(X_i))$, when $X_i,W_i$ are iid

Published on 02 Apr 2026 - 11:28

127

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Generalized Coupon Collector's Problem

Published on 24 Feb 2026 - 3:25

1.3k

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Expectations of Independent/Dependent Random Variables

Published on 18 Feb 2016 - 21:37

174

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An urn contains $N$ balls out of which $R$ are red and $B$ are blue. We picked randomly $10$ balls. Find the the expecting average of red balls.

Published on 18 Feb 2016 - 22:38

101

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A probability of receiving k emergency calls in an hour is given by a function. Find m if you know that expected number of phone calls is 3

Published on 18 Feb 2016 - 23:08

244

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Inequality for moments of sums

Published on 28 Mar 2026 - 13:28

94

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Is this a valid proof for the divergence of $E\left( \frac{1}{\bar{X}} \right)$ for a Normal distribution?

Published on 19 Feb 2016 - 14:53

299

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Given mean and standard deviation of the number of accidents in Town A, find mean and variance in Town B.

Published on 30 Mar 2026 - 22:51

62

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Marginilizing in multivariate Statistical Distributions

Published on 20 Feb 2016 - 8:47

61

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Expectation - $n$ balls taken out of a box

Published on 20 Feb 2016 - 11:31

List Question

Does $\log(E[U]) = E[\log(U)]$?

Expectations in scaled probability space

Expectation of log likelihood ratio

expected value of multiplication of random matrices

What can we conclude if one of the odd moment is zero?

Why does $Var(Y) = Var(\sum_i^n W_iXi) = n(Var(W_i)Var(X_i))$, when $X_i,W_i$ are iid

Generalized Coupon Collector's Problem

Expectations of Independent/Dependent Random Variables

An urn contains $N$ balls out of which $R$ are red and $B$ are blue. We picked randomly $10$ balls. Find the the expecting average of red balls.

A probability of receiving k emergency calls in an hour is given by a function. Find m if you know that expected number of phone calls is 3

Inequality for moments of sums

Is this a valid proof for the divergence of $E\left( \frac{1}{\bar{X}} \right)$ for a Normal distribution?

Given mean and standard deviation of the number of accidents in Town A, find mean and variance in Town B.

Marginilizing in multivariate Statistical Distributions

Expectation - $n$ balls taken out of a box

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