Question

Need an upper bound for a simple expectation involving Rademacher random variables.

score 666 · Answer 1 · 2026-03-25 15:28:48

666

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Need an upper bound for a simple expectation involving Rademacher random variables.

Published on 25 Mar 2026 - 15:28

score 51 · Answer 2 · 2026-04-01 11:04:49

51

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Are these true for a martingale? $E\left[ \frac{X_{n+1}}{X_n} \right] = 1, E\left[ \frac{X_{n+2}}{X_n} \right] = 1 $

Published on 01 Apr 2026 - 11:04

score 53 · Answer 3 · 2026-03-29 21:53:12

53

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Expectation of (non-linear) transformed random variables

Published on 29 Mar 2026 - 21:53

score 24 · Answer 4 · 2026-03-28 13:36:25

24

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Covariance of normal distributed random variables if one variable is squared

Published on 28 Mar 2026 - 13:36

score 979 · Answer 5 · 2020-07-24 14:28:14

979

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What is the relationship between the Leibniz integral rule and the dominated convergence theorem?

Published on 24 Jul 2020 - 14:28

score 86 · Answer 6 · 2026-04-09 00:18:20

86

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Explain how to translate Lebesgue to Riemann integral in expected value definition

Published on 09 Apr 2026 - 0:18

score 46 · Answer 7 · 2026-03-26 18:58:48

46

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representing of expectation for submatrices

Published on 26 Mar 2026 - 18:58

score 35 · Answer 8 · 2026-03-30 15:29:27

35

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An upper-bound for variance of a random variable satisfying a linear inequality

Published on 30 Mar 2026 - 15:29

score 214 · Answer 9 · 2026-04-08 17:43:02

214

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How fast does $\lim_{ t \to 0} E \left[ \|Z\|^2 1_{B}(X,X+\sqrt{t} Z) \right]= E \left[ \|Z\|^2 \right] E[1_B(X)]$

Published on 08 Apr 2026 - 17:43

score 561 · Answer 10 · 2026-03-26 08:14:37

561

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The Broken Calculator Problem

Published on 26 Mar 2026 - 8:14

score 1.4k · Answer 11 · 2026-03-29 03:51:15

1.4k

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A fair six-sided die is rolled repeatedly until three sixes are rolled consecutively. What is the expected number of rolls?

Published on 29 Mar 2026 - 3:51

score 530 · Answer 12 · 2026-04-08 16:20:30

530

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Probability of the record, its expected value and variation

Published on 08 Apr 2026 - 16:20

score 146 · Answer 13 · 2020-07-26 16:40:43

146

Views

When does it make sense to use $p(X)$ where $p$ is a pdf and $X$ a random variable, and $p(X)$ is the composition of $p$ and $X$?

Published on 26 Jul 2020 - 16:40

score 131 · Answer 14 · 2020-07-26 20:01:04

131

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What is E[X-Y]?

Published on 26 Jul 2020 - 20:01

score 80 · Answer 15 · 2020-07-26 20:09:20

80

Views

Expected number of buckets filled when placing $N$ balls such that no $2$ adjacent buckets can be filled?

Published on 26 Jul 2020 - 20:09

List Question

Need an upper bound for a simple expectation involving Rademacher random variables.

Are these true for a martingale? $E\left[ \frac{X_{n+1}}{X_n} \right] = 1, E\left[ \frac{X_{n+2}}{X_n} \right] = 1 $

Expectation of (non-linear) transformed random variables

Covariance of normal distributed random variables if one variable is squared

What is the relationship between the Leibniz integral rule and the dominated convergence theorem?

Explain how to translate Lebesgue to Riemann integral in expected value definition

representing of expectation for submatrices

An upper-bound for variance of a random variable satisfying a linear inequality

How fast does $\lim_{ t \to 0} E \left[ \|Z\|^2 1_{B}(X,X+\sqrt{t} Z) \right]= E \left[ \|Z\|^2 \right] E[1_B(X)]$

The Broken Calculator Problem

A fair six-sided die is rolled repeatedly until three sixes are rolled consecutively. What is the expected number of rolls?

Probability of the record, its expected value and variation

When does it make sense to use $p(X)$ where $p$ is a pdf and $X$ a random variable, and $p(X)$ is the composition of $p$ and $X$?

What is E[X-Y]?

Expected number of buckets filled when placing $N$ balls such that no $2$ adjacent buckets can be filled?

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