Question

Variance of balls in bins

score 467 · Answer 1 · 2026-03-28 07:43:01

467

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Variance of balls in bins

Published on 28 Mar 2026 - 7:43

score 59 · Answer 2 · 2021-11-07 23:21:20

59

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Is it true that $\text{Var}(X)=\mathbb E[(X-Y)_{+}^{2}]$ for $Y$ iid to $X$

Published on 07 Nov 2021 - 23:21

score 158 · Answer 3 · 2026-04-01 12:51:17

158

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Showing that $ \operatorname {Var} ( X ) \le 1 $ when $ | X | \le 1 $ a.s., and that the maximum is attained

Published on 01 Apr 2026 - 12:51

score 164 · Answer 4 · 2026-04-01 04:25:29

164

Views

Asymptotic variance of MLE and MME estimator

Published on 01 Apr 2026 - 4:25

score 101 · Answer 5 · 2026-04-06 16:17:12

101

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Conditional variance of Y with Y-conditionally independent variables

Published on 06 Apr 2026 - 16:17

score 33 · Answer 6 · 2026-04-01 05:45:14

33

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Questions about the using of pooled variance method by determining the parameter "b" in order to get a mathematical and mostly physical good result

Published on 01 Apr 2026 - 5:45

score 5k · Answer 7 · 2026-04-06 16:12:47

5k

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Can covariance be negative?

Published on 06 Apr 2026 - 16:12

score 19 · Answer 8 · 2026-03-28 00:30:24

19

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What can be the upper bound of the deviatons in a data set, given the mean and the SD?

Published on 28 Mar 2026 - 0:30

score 466 · Answer 9 · 2021-11-15 14:21:12

466

Views

Distribution and moments of $\frac{X_iX_j}{\sum_{i=1}^n X_i^2}$ when $X_i$'s are i.i.d $N(0,\sigma^2)$

Published on 15 Nov 2021 - 14:21

score 29 · Answer 10 · 2026-04-04 06:01:21

29

Views

How does expected minimum of a set of random variables decreases as the variance of the random variables increases?

Published on 04 Apr 2026 - 6:01

score 52 · Answer 11 · 2026-03-28 12:48:21

52

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Simplfy variance of an image

Published on 28 Mar 2026 - 12:48

score 157 · Answer 12 · 2026-03-25 23:38:07

157

Views

Spherical harmonics - Computing the variance of Poisson noise integrated over $\ell$ on a defined quantity?

Published on 25 Mar 2026 - 23:38

score 466 · Answer 13 · 2026-03-26 12:53:33

466

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Under what conditions will the variance of max(X,Y) be greater than max(X-Y,0), if X and Y are random variables?

Published on 26 Mar 2026 - 12:53

score 62 · Answer 14 · 2026-04-02 16:39:11

62

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Deriving variance for running statistics

Published on 02 Apr 2026 - 16:39

score 32 · Answer 15 · 2026-04-02 13:24:12

32

Views

How can we derivate with a constant in trying to prove that correlation coefficient is between $-1$ and $1$?

Published on 02 Apr 2026 - 13:24

List Question

Variance of balls in bins

Is it true that $\text{Var}(X)=\mathbb E[(X-Y)_{+}^{2}]$ for $Y$ iid to $X$

Showing that $ \operatorname {Var} ( X ) \le 1 $ when $ | X | \le 1 $ a.s., and that the maximum is attained

Asymptotic variance of MLE and MME estimator

Conditional variance of Y with Y-conditionally independent variables

Questions about the using of pooled variance method by determining the parameter "b" in order to get a mathematical and mostly physical good result

Can covariance be negative?

What can be the upper bound of the deviatons in a data set, given the mean and the SD?

Distribution and moments of $\frac{X_iX_j}{\sum_{i=1}^n X_i^2}$ when $X_i$'s are i.i.d $N(0,\sigma^2)$

How does expected minimum of a set of random variables decreases as the variance of the random variables increases?

Simplfy variance of an image

Spherical harmonics - Computing the variance of Poisson noise integrated over $\ell$ on a defined quantity?

Under what conditions will the variance of max(X,Y) be greater than max(X-Y,0), if X and Y are random variables?

Deriving variance for running statistics

How can we derivate with a constant in trying to prove that correlation coefficient is between $-1$ and $1$?

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