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Stable measure of spread of a function over a finite interval

score 34 · Answer 1 · 2026-03-25 17:39:21

34

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Stable measure of spread of a function over a finite interval

Published on 25 Mar 2026 - 17:39

score 42 · Answer 2 · 2020-06-03 17:39:25

42

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Calculate covariance of 2 random variables when only given variance and cov

Published on 03 Jun 2020 - 17:39

score 28 · Answer 3 · 2020-06-04 14:37:51

28

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Variance of $X$, an uniformly random sum from a finite set $S$.

Published on 04 Jun 2020 - 14:37

score 64 · Answer 4 · 2020-06-04 15:42:14

64

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When is $\sqrt{k}\operatorname{Var}\left(\sum_{i=1}^{k}X_{i}\right) \leq \sum_{i=1}^{k}\operatorname{Var}(X_{i}) $ true?

Published on 04 Jun 2020 - 15:42

score 74 · Answer 5 · 2020-06-05 18:49:17

74

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Finding the conditional variance of two discrete random variables in a coin flip

Published on 05 Jun 2020 - 18:49

score 116 · Answer 6 · 2020-06-05 23:16:55

116

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Why is variance defined as $\sum\limits_{n} |\mu -x_i|^2$ and not $\sum\limits_{n} |\mu -x_i|$?

Published on 05 Jun 2020 - 23:16

score 71 · Answer 7 · 2026-03-28 12:14:05

71

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What kind of deviation is the $sx$ button on my calculator?

Published on 28 Mar 2026 - 12:14

score 228 · Answer 8 · 2026-03-28 01:05:50

228

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Chebyshev inequality but with normalized maximum estimation error

Published on 28 Mar 2026 - 1:05

score 166 · Answer 9 · 2026-03-28 12:14:53

166

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Why don't we just take the root of the numerator instead of taking the root of the whole thing in the expression for standard deviation?

Published on 28 Mar 2026 - 12:14

score 36 · Answer 10 · 2026-03-28 12:14:24

36

Views

Rough rule of thumb for when to use $N$ and when to use $N-1$ when calculating variance.

Published on 28 Mar 2026 - 12:14

score 53 · Answer 11 · 2020-06-08 01:10:35

53

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Finding the Variance

Published on 08 Jun 2020 - 1:10

score 312 · Answer 12 · 2026-03-26 00:58:50

312

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Delta method for asymptotic variance

Published on 26 Mar 2026 - 0:58

score 27 · Answer 13 · 2026-03-28 16:44:19

27

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Determine all $\overrightarrow{a}$ for an unbiased estimator of the variance

Published on 28 Mar 2026 - 16:44

score 466 · Answer 14 · 2020-06-10 14:23:48

466

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Expected number of red balls in urn of two-coloured balls with color substitution.

Published on 10 Jun 2020 - 14:23

score 40 · Answer 15 · 2026-02-24 07:40:11

40

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Confidence intervals for ratios of variances of different populations and other confusing stats

Published on 24 Feb 2026 - 7:40

List Question

Stable measure of spread of a function over a finite interval

Calculate covariance of 2 random variables when only given variance and cov

Variance of $X$, an uniformly random sum from a finite set $S$.

When is $\sqrt{k}\operatorname{Var}\left(\sum_{i=1}^{k}X_{i}\right) \leq \sum_{i=1}^{k}\operatorname{Var}(X_{i}) $ true?

Finding the conditional variance of two discrete random variables in a coin flip

Why is variance defined as $\sum\limits_{n} |\mu -x_i|^2$ and not $\sum\limits_{n} |\mu -x_i|$?

What kind of deviation is the $sx$ button on my calculator?

Chebyshev inequality but with normalized maximum estimation error

Why don't we just take the root of the numerator instead of taking the root of the whole thing in the expression for standard deviation?

Rough rule of thumb for when to use $N$ and when to use $N-1$ when calculating variance.

Finding the Variance

Delta method for asymptotic variance

Determine all $\overrightarrow{a}$ for an unbiased estimator of the variance

Expected number of red balls in urn of two-coloured balls with color substitution.

Confidence intervals for ratios of variances of different populations and other confusing stats

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