List questions from expectation

Published on 02 May 2018 - 12:51

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Setting up questions relating to expected number

Published on 25 Mar 2026 - 0:00

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Why $\mathbb E[X|Y]$ not equal to $\frac{\mathbb E[XY]}{\mathbb E[Y^2]}Y$ al the time?

Published on 03 May 2018 - 13:22

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Actuary expected value question (car battery)

Published on 04 May 2018 - 3:15

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Let $X_1, X_2, \dots,X_n$ independent random variables.

Published on 05 May 2018 - 10:00

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A maximal inequality for random variables with finite $L^{p}$ norm

Published on 05 May 2018 - 14:14

83

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if $X\sim \operatorname{Bin}(n,p)$ and $Y={X \choose 2 }$ What is the intuition behind $E(Y) = {n \choose 2}p^2$

Published on 25 Mar 2026 - 6:22

63

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Another balls game

Published on 06 May 2018 - 10:31

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Poisson and moments

Published on 26 Mar 2026 - 6:19

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The math of waiting to be sitted

Published on 07 May 2018 - 6:31

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Expectation/Variance of piecewise function of random variables

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Determine mean and standard deviation given -

Published on 26 Mar 2026 - 2:53

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Bounded expectation of a martingale process

Published on 25 Mar 2026 - 12:55

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Find the value of the constant $a$ which minimizes $E[(Y-aX)^2]$

Published on 08 May 2018 - 0:33

180

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Calculating the expected value from this kind of variance

Published on 26 Mar 2026 - 4:32

List Question

Probability question - expected number of students

Setting up questions relating to expected number

Why $\mathbb E[X|Y]$ not equal to $\frac{\mathbb E[XY]}{\mathbb E[Y^2]}Y$ al the time?

Actuary expected value question (car battery)

Let $X_1, X_2, \dots,X_n$ independent random variables.

A maximal inequality for random variables with finite $L^{p}$ norm

if $X\sim \operatorname{Bin}(n,p)$ and $Y={X \choose 2 }$ What is the intuition behind $E(Y) = {n \choose 2}p^2$

Another balls game

Poisson and moments

The math of waiting to be sitted

Expectation/Variance of piecewise function of random variables

Determine mean and standard deviation given -

Bounded expectation of a martingale process

Find the value of the constant $a$ which minimizes $E[(Y-aX)^2]$

Calculating the expected value from this kind of variance

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