List questions from expectation

Published on 03 Apr 2026 - 7:36

148

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Deriving $Cov(X,Y,Z)$, is it even a thing?

Published on 02 Apr 2026 - 5:28

113

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If odds of an event is $80\%$, how many events needed until you get $n$ consecutive events?

Published on 13 Mar 2015 - 13:34

38

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Finding the expectation of the given expression

Published on 14 Mar 2015 - 17:07

168

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Expected value or median of a function defined on sphere with uniform distribution

Published on 27 Mar 2026 - 22:31

2.5k

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Poisson Process: Expectation of product

Published on 01 Apr 2026 - 11:47

166

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For a random variable $X$ such that $P(a<X<b)=1$, showing $E(X)E\left(\frac{1}{X}\right) \le\frac{(a+b)^2}{4ab}$

Published on 26 Mar 2026 - 9:17

96

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Choosing a random number

Published on 29 Mar 2026 - 2:28

30

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Is $\sum k(f_k(0)-f_{k-1}(0))$ infinite?

Published on 17 Mar 2015 - 18:46

381

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Covariance of absolute value of variables

Published on 02 Apr 2026 - 5:29

59

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maximising expected value with a variance constraint

Published on 02 Apr 2026 - 20:50

140

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Expected value of $X(X'X)^{-1}X'$ if X has normally distributes entries

Published on 27 Mar 2026 - 21:35

3.4k

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The expected value of $1/(1+X)$ where $X$ has geometric distribution

Published on 20 Mar 2015 - 1:38

1.6k

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Proof of Wald's Equation: Why do we need this statement?

Published on 20 Mar 2015 - 12:02

128

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Relation between monotone and dominated convergence theorem and related questions

Published on 20 Mar 2015 - 12:37

List Question

Is monotony preserved under expectation?

Deriving $Cov(X,Y,Z)$, is it even a thing?

If odds of an event is $80\%$, how many events needed until you get $n$ consecutive events?

Finding the expectation of the given expression

Expected value or median of a function defined on sphere with uniform distribution

Poisson Process: Expectation of product

For a random variable $X$ such that $P(a<X<b)=1$, showing $E(X)E\left(\frac{1}{X}\right) \le\frac{(a+b)^2}{4ab}$

Choosing a random number

Is $\sum k(f_k(0)-f_{k-1}(0))$ infinite?

Covariance of absolute value of variables

maximising expected value with a variance constraint

Expected value of $X(X'X)^{-1}X'$ if X has normally distributes entries

The expected value of $1/(1+X)$ where $X$ has geometric distribution

Proof of Wald's Equation: Why do we need this statement?

Relation between monotone and dominated convergence theorem and related questions

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