Question

Upper Bound on Vertices in SCC Graph of Directed Random Graph

score 251 · Answer 1 · 2026-05-06 03:26:48

251

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Upper Bound on Vertices in SCC Graph of Directed Random Graph

Published on 06 May 2026 - 3:26

score 722 · Answer 2 · 2026-05-07 12:41:15

722

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Difference between conditional expectation E(Y|X) and E(Y|X=x)

Published on 07 May 2026 - 12:41

score 213 · Answer 3 · 2026-04-14 01:36:47

213

Views

For independent, symmetric random variables $(\xi_n)$, $E\left(\left(\sum\limits_n\xi_n\right)^2\land1\right)\le\sum\limits_nE(\xi_n^2\land1)$

Published on 14 Apr 2026 - 1:36

score 526 · Answer 4 · 2026-05-10 12:32:23

526

Views

Finite Expected Value of Martingale

Published on 10 May 2026 - 12:32

score 323 · Answer 5 · 2026-04-12 05:25:32

323

Views

Expectation of Scalar Function of Multivariate Gaussian

Published on 12 Apr 2026 - 5:25

score 1.6k · Answer 6 · 2026-04-15 13:09:05

1.6k

Views

E[XY] = E[X]E[Y] for dependent RVs

Published on 15 Apr 2026 - 13:09

score 71 · Answer 7 · 2026-04-29 12:24:48

71

Views

Characteristic function is $2k-th$ differentiable, prove $E[X^{2k}]$ exists

Published on 29 Apr 2026 - 12:24

score 295 · Answer 8 · 2026-04-13 04:05:40

295

Views

expected distance between two points on the circle

Published on 13 Apr 2026 - 4:05

score 63 · Answer 9 · 2026-05-03 10:55:46

63

Views

Roll die with waiting

Published on 03 May 2026 - 10:55

score 234 · Answer 10 · 2026-04-15 17:53:47

234

Views

Expected number of coin tosses before obtaining at least 1 head

Published on 15 Apr 2026 - 17:53

score 70 · Answer 11 · 2026-04-29 12:52:37

70

Views

Is $\mathcal{L}_{M}(\Omega, \mathcal{F}, \mathbb{P})$ a linear subspace?

Published on 29 Apr 2026 - 12:52

score 58 · Answer 12 · 2026-04-12 07:48:57

58

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If $f$ is a density function of $\xi$, is there any way to express $\int_{\mathbb{R}}f(x)^2 dx$ in terms of the expected value of $\xi$?

Published on 12 Apr 2026 - 7:48

score 1.2k · Answer 13 · 2026-04-16 13:55:14

1.2k

Views

4 People 4 Hats, probably exactly 0,1,2,3,4 get their hats back

Published on 16 Apr 2026 - 13:55

score 1.6k · Answer 14 · 2026-05-07 07:36:17

1.6k

Views

Variance of Z = max(X,Y) where X Y are jointly bivariate normal

Published on 07 May 2026 - 7:36

score 342 · Answer 15 · 2026-04-29 12:50:34

342

Views

Durrett: Showing $E(\log Y)$ is negative when $Y$ is nonnegative with $E(Y) = 1$ and $P(Y = 1) < 1$

Published on 29 Apr 2026 - 12:50

List Question

Upper Bound on Vertices in SCC Graph of Directed Random Graph

Difference between conditional expectation E(Y|X) and E(Y|X=x)

For independent, symmetric random variables $(\xi_n)$, $E\left(\left(\sum\limits_n\xi_n\right)^2\land1\right)\le\sum\limits_nE(\xi_n^2\land1)$

Finite Expected Value of Martingale

Expectation of Scalar Function of Multivariate Gaussian

E[XY] = E[X]E[Y] for dependent RVs

Characteristic function is $2k-th$ differentiable, prove $E[X^{2k}]$ exists

expected distance between two points on the circle

Roll die with waiting

Expected number of coin tosses before obtaining at least 1 head

Is $\mathcal{L}_{M}(\Omega, \mathcal{F}, \mathbb{P})$ a linear subspace?

If $f$ is a density function of $\xi$, is there any way to express $\int_{\mathbb{R}}f(x)^2 dx$ in terms of the expected value of $\xi$?

4 People 4 Hats, probably exactly 0,1,2,3,4 get their hats back

Variance of Z = max(X,Y) where X Y are jointly bivariate normal

Durrett: Showing $E(\log Y)$ is negative when $Y$ is nonnegative with $E(Y) = 1$ and $P(Y = 1) < 1$

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