Question

When should I search for the covariance matrix instead of the variance?

score 57 · Answer 1 · 2016-10-12 20:52:34

57

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When should I search for the covariance matrix instead of the variance?

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score 714 · Answer 2 · 2016-10-12 21:59:53

714

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score 46 · Answer 4 · 2016-10-14 23:29:31

46

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score 133 · Answer 5 · 2016-10-16 02:11:40

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score 200 · Answer 6 · 2016-10-16 02:52:10

200

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Showing $\mathrm{Var}(\min(X,y))$ is increasing in $y$ where $X$ is a random variable

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score 824 · Answer 7 · 2026-03-30 03:54:05

824

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score 90 · Answer 8 · 2016-10-16 18:54:50

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score 4.1k · Answer 9 · 2016-10-17 00:01:52

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score 61 · Answer 10 · 2016-10-17 01:44:31

61

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Find Conditonal Variance of $y$ given $x=\frac{1}{2}$

Published on 17 Oct 2016 - 1:44

score 100 · Answer 11 · 2026-03-30 00:53:52

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score 19k · Answer 12 · 2026-03-28 15:01:27

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score 583 · Answer 13 · 2026-03-28 13:28:07

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score 95 · Answer 14 · 2016-10-18 20:02:02

95

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score 1.8k · Answer 15 · 2016-10-18 21:46:20

1.8k

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How to find the variance of $U= X-2Y+4Z$? & The Co-variance of $U=X-2Y+4Z$ and $V = 3X-Y-Z$

Published on 18 Oct 2016 - 21:46

List Question

When should I search for the covariance matrix instead of the variance?

Conditional variance of simple random walk

Find the MLE and asymptotic variance

Show that $\int (f'(x))^2dx=\frac{1}{2\sqrt{\pi}}Var(Y)$

Expected Value and Variance for a Probability Function

Showing $\mathrm{Var}(\min(X,y))$ is increasing in $y$ where $X$ is a random variable

Linear regression: how does multicollinearity inflate variance of estimators

Proving variance of a random variable increases when it takes larger value over some part of domain

Using conditional Variance formula to find conditional variance in terms of X and Y.

Find Conditonal Variance of $y$ given $x=\frac{1}{2}$

Theoretical variance of an unbiased estimator.

Finding two missing numbers using mean and standard deviation

Variance of the sum of random variables

Expectation and Variance of the Number of Changes of Sign in a Sequence

How to find the variance of $U= X-2Y+4Z$? & The Co-variance of $U=X-2Y+4Z$ and $V = 3X-Y-Z$

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