Question

Find $\text{Var}(N)$ where $P(N = n|Y = y)$ is $\text{Possion}(y)$; $Y$ is a gamma with parameters $(r,\lambda)$

score 605 · Answer 1 · 2026-04-02 11:27:23

605

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Find $\text{Var}(N)$ where $P(N = n|Y = y)$ is $\text{Possion}(y)$; $Y$ is a gamma with parameters $(r,\lambda)$

Published on 02 Apr 2026 - 11:27

score 432 · Answer 2 · 2016-02-05 04:48:20

432

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The density of a random variable $X$ is $f(x)$ proportional to $x^{-1/2}$ , what is the mean of $X$?

Published on 05 Feb 2016 - 4:48

score 33 · Answer 3 · 2016-02-05 15:15:35

Limit to Expectation: $ - \lim_{N \rightarrow \infty } \frac{1}{N} \sum_{n=1}^{N} \frac{\partial}{\partial \theta} \ln p(x_n|\theta)$

score 851 · Answer 4 · 2026-04-06 05:16:07

851

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Stopping time and the Martingale stopping theorem.

Published on 06 Apr 2026 - 5:16

score 92 · Answer 5 · 2026-04-02 11:33:29

92

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Expectation and Variance of $X/(X+Y+Z)$

Published on 02 Apr 2026 - 11:33

score 29 · Answer 6 · 2026-03-26 17:18:19

29

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Is the intuition correct?

Published on 26 Mar 2026 - 17:18

score 60 · Answer 7 · 2016-02-06 20:34:22

60

Views

Expectation of Conditional expectation over incorrect distribution

Published on 06 Feb 2016 - 20:34

score 27 · Answer 8 · 2016-02-07 13:39:03

27

Views

Expectation of the minimum of two $\mathcal U(0, 1)$ r.v.'s conditional on it being greater than or equal to some value

Published on 07 Feb 2016 - 13:39

score 905 · Answer 9 · 2016-02-07 17:52:09

905

Views

Infinite expectation implies infinite random variable?

Published on 07 Feb 2016 - 17:52

score 313 · Answer 10 · 2026-04-01 02:36:13

313

Views

Find the moments of a binomial conditioned on a binomial?

Published on 01 Apr 2026 - 2:36

score 1k · Answer 11 · 2016-02-07 23:41:50

1k

Views

Expectation of an exponent of a random variable

Published on 07 Feb 2016 - 23:41

score 348 · Answer 12 · 2026-03-30 03:38:25

348

Views

Expectation of product of iid random variables limited by stopping time

Published on 30 Mar 2026 - 3:38

score 92 · Answer 13 · 2016-02-08 10:54:21

92

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Proportional probability of payouts with defined expected value.

Published on 08 Feb 2016 - 10:54

score 1k · Answer 14 · 2016-02-08 18:46:27

1k

Views

Weak convergence and convergence of moments

Published on 08 Feb 2016 - 18:46

score 756 · Answer 15 · 2016-02-08 19:19:25

756

Views

Expected Number of Draws without Replacement

Published on 08 Feb 2016 - 19:19

List Question

Find $\text{Var}(N)$ where $P(N = n|Y = y)$ is $\text{Possion}(y)$; $Y$ is a gamma with parameters $(r,\lambda)$

The density of a random variable $X$ is $f(x)$ proportional to $x^{-1/2}$ , what is the mean of $X$?

Limit to Expectation: $ - \lim_{N \rightarrow \infty } \frac{1}{N} \sum_{n=1}^{N} \frac{\partial}{\partial \theta} \ln p(x_n|\theta)$

Stopping time and the Martingale stopping theorem.

Expectation and Variance of $X/(X+Y+Z)$

Is the intuition correct?

Expectation of Conditional expectation over incorrect distribution

Expectation of the minimum of two $\mathcal U(0, 1)$ r.v.'s conditional on it being greater than or equal to some value

Infinite expectation implies infinite random variable?

Find the moments of a binomial conditioned on a binomial?

Expectation of an exponent of a random variable

Expectation of product of iid random variables limited by stopping time

Proportional probability of payouts with defined expected value.

Weak convergence and convergence of moments

Expected Number of Draws without Replacement

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