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Variance of sample variance in terms of kurtosis

score 418 · Answer 1 · 2020-04-10 17:19:19

418

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Variance of sample variance in terms of kurtosis

Published on 10 Apr 2020 - 17:19

score 194 · Answer 2 · 2020-04-10 21:07:56

194

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Why is $\operatorname{cov}(X_i,X_j) \leq 1/\min(i,j)$?

Published on 10 Apr 2020 - 21:07

score 749 · Answer 3 · 2020-04-11 04:16:26

749

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How is $E[XY] - E[X]E[Y]$ affected if $X$ and $Y$ aren't independent random variable?

Published on 11 Apr 2020 - 4:16

score 470 · Answer 4 · 2026-03-28 11:53:42

470

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Black Scholes Model expectation and variance (SDE)

Published on 28 Mar 2026 - 11:53

score 227 · Answer 5 · 2020-04-11 11:41:28

227

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What is the variance of $X_1+X_2+\cdots+X_{N+1}$?

Published on 11 Apr 2020 - 11:41

score 155 · Answer 6 · 2026-03-25 19:04:59

155

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Finding the Variance of Final Wealth in Gambler's Ruin?

Published on 25 Mar 2026 - 19:04

score 551 · Answer 7 · 2020-04-12 07:31:27

551

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Expected value and variance of a RV that takes values uniformly between [2^a, 2^b]

Published on 12 Apr 2020 - 7:31

score 104 · Answer 8 · 2020-04-12 18:56:42

104

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What does the Bessel corrected sample variance represent?

Published on 12 Apr 2020 - 18:56

score 253 · Answer 9 · 2020-04-13 13:17:57

253

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Variance of the Average of Two Half Normal Distributions

Published on 13 Apr 2020 - 13:17

score 87 · Answer 10 · 2020-04-13 14:32:43

87

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Rolling a die $n$ times, how do you calculate the Variance of the number of results that appear atleast once?

Published on 13 Apr 2020 - 14:32

score 1.4k · Answer 11 · 2026-03-27 10:31:38

1.4k

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Expected Value and Variance of Poisson Process Bus Stop

Published on 27 Mar 2026 - 10:31

score 302 · Answer 12 · 2026-02-23 13:46:13

302

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Expected Value of the number of letters we need to draw from the alphabet

Published on 23 Feb 2026 - 13:46

score 248 · Answer 13 · 2026-03-28 01:08:36

248

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Can the covariance of X and Y be larger than the variance of X?

Published on 28 Mar 2026 - 1:08

score 69 · Answer 14 · 2026-03-27 15:19:00

69

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Effect on variance when 2 observations out of the set of n observations are added and subtracted with a constant

Published on 27 Mar 2026 - 15:19

score 588 · Answer 15 · 2020-04-15 09:25:06

588

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Exercise 3.4.2 Grimmett and Stirzaker (probability theory)

Published on 15 Apr 2020 - 9:25

List Question

Variance of sample variance in terms of kurtosis

Why is $\operatorname{cov}(X_i,X_j) \leq 1/\min(i,j)$?

How is $E[XY] - E[X]E[Y]$ affected if $X$ and $Y$ aren't independent random variable?

Black Scholes Model expectation and variance (SDE)

What is the variance of $X_1+X_2+\cdots+X_{N+1}$?

Finding the Variance of Final Wealth in Gambler's Ruin?

Expected value and variance of a RV that takes values uniformly between [2^a, 2^b]

What does the Bessel corrected sample variance represent?

Variance of the Average of Two Half Normal Distributions

Rolling a die $n$ times, how do you calculate the Variance of the number of results that appear atleast once?

Expected Value and Variance of Poisson Process Bus Stop

Expected Value of the number of letters we need to draw from the alphabet

Can the covariance of X and Y be larger than the variance of X?

Effect on variance when 2 observations out of the set of n observations are added and subtracted with a constant

Exercise 3.4.2 Grimmett and Stirzaker (probability theory)

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