List questions from expectation

Published on 11 Apr 2026 - 12:22

295

Views

A sequence of random variables $(X_n)$ such that $\mathbb E(X_n)\to -\infty$ but $X_n\to +\infty$ a.s.

Published on 11 Oct 2013 - 8:50

790

Views

Conditional expected value of a product of two independent normal variables

Published on 10 Apr 2026 - 22:20

108

Views

airplane weight

Published on 12 Oct 2013 - 11:51

277

Views

expectation equations

Published on 12 Oct 2013 - 13:12

1.4k

Views

Expectation of concave function

Published on 10 Apr 2026 - 20:19

99

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Relation between conditional expectations

Published on 10 Apr 2026 - 10:10

3.1k

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linearity of expectation in case of dependent events

Published on 10 Apr 2026 - 23:26

60

Views

Expectation comparison of order statistics

Published on 29 Mar 2026 - 6:55

745

Views

Find the expected number of '01's in a string

Published on 17 Oct 2013 - 12:47

259

Views

Expectation of throws before having $k$ balls in each box

Published on 24 Feb 2026 - 6:48

13.7k

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Prove that the expectation of residual sum of squares (RSS) is equal to $\sigma^2(n-2)$

Published on 29 Mar 2026 - 5:34

7.6k

Views

Expected number of simple, unordered cycles in a random graph

Published on 19 Oct 2013 - 14:20

112

Views

Finding Conditional Probabilities/Requirements on lambda

Published on 10 Apr 2026 - 22:58

69

Views

Prove $E(X) = \sum_{j=1}^n E(X|X \in A_j) \mathrm{Pr}(X \in A)$

Published on 20 Oct 2013 - 18:27

List Question

How to calculate conditional expectation only from the characteristic function

A sequence of random variables $(X_n)$ such that $\mathbb E(X_n)\to -\infty$ but $X_n\to +\infty$ a.s.

Conditional expected value of a product of two independent normal variables

airplane weight

expectation equations

Expectation of concave function

Relation between conditional expectations

linearity of expectation in case of dependent events

Expectation comparison of order statistics

Find the expected number of '01's in a string

Expectation of throws before having $k$ balls in each box

Prove that the expectation of residual sum of squares (RSS) is equal to $\sigma^2(n-2)$

Expected number of simple, unordered cycles in a random graph

Finding Conditional Probabilities/Requirements on lambda

Prove $E(X) = \sum_{j=1}^n E(X|X \in A_j) \mathrm{Pr}(X \in A)$

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