Question

If $\operatorname{Corr}(X,Y)=1$, then $ \operatorname{Corr}(X,Z)=\operatorname{Corr}(Y,Z)$

score 234 · Answer 1 · 2026-03-26 13:02:41

234

Views

If $\operatorname{Corr}(X,Y)=1$, then $ \operatorname{Corr}(X,Z)=\operatorname{Corr}(Y,Z)$

Published on 26 Mar 2026 - 13:02

score 95 · Answer 2 · 2019-07-10 11:19:02

95

Views

Is it right to say that vectors $A_1 X$ and $A_2 X$ are independent iff $A_1A_2^\top=0$?

Published on 10 Jul 2019 - 11:19

score 25 · Answer 3 · 2019-07-10 16:38:11

25

Views

How can we interpret a covariance of a data wth zero mean?

Published on 10 Jul 2019 - 16:38

score 247 · Answer 4 · 2019-07-11 16:39:08

247

Views

What happens if order of variables in covariance operation is changed?

Published on 11 Jul 2019 - 16:39

score 209 · Answer 5 · 2019-07-17 09:23:20

209

Views

What does the symbol X mean in the definition of the covariance matrix specifically?

Published on 17 Jul 2019 - 9:23

score 42 · Answer 6 · 2019-07-18 16:07:15

42

Views

Covariance between fluctuating number of random variables

Published on 18 Jul 2019 - 16:07

score 44 · Answer 7 · 2019-07-19 17:16:08

44

Views

Covariance of two Monte Carlo estimations

Published on 19 Jul 2019 - 17:16

score 621 · Answer 8 · 2019-07-20 03:23:17

621

Views

Covariance between sum of iid random variables and sum of indicator functions

Published on 20 Jul 2019 - 3:23

score 39 · Answer 9 · 2026-03-28 07:36:30

39

Views

Express gaussian uncertainty in another frame

Published on 28 Mar 2026 - 7:36

score 68 · Answer 10 · 2026-03-26 13:02:12

68

Views

Unclear step in the proof that correlation coefficient lies in the intervall [-1, 1]

Published on 26 Mar 2026 - 13:02

score 3.2k · Answer 11 · 2026-03-26 13:57:19

3.2k

Views

Is non semi-positive definite matrix invertible?

Published on 26 Mar 2026 - 13:57

score 80 · Answer 12 · 2019-08-03 21:44:30

80

Views

A version of PCA which chooses regressors based on covariance between responses and X

Published on 03 Aug 2019 - 21:44

score 43 · Answer 13 · 2019-08-08 08:17:21

43

Views

Covariance of products of dependent random variables

Published on 08 Aug 2019 - 8:17

score 467 · Answer 14 · 2019-08-09 21:06:00

467

Views

Commutative covariance matrixes

Published on 09 Aug 2019 - 21:06

score 79 · Answer 15 · 2026-03-28 07:41:35

79

Views

what does it mean if $\text{Cov}(X,Y)$ = $\text{Cov}(Y,Y)$ = $\text{Var}(Y)$

Published on 28 Mar 2026 - 7:41

List Question

If $\operatorname{Corr}(X,Y)=1$, then $ \operatorname{Corr}(X,Z)=\operatorname{Corr}(Y,Z)$

Is it right to say that vectors $A_1 X$ and $A_2 X$ are independent iff $A_1A_2^\top=0$?

How can we interpret a covariance of a data wth zero mean?

What happens if order of variables in covariance operation is changed?

What does the symbol X mean in the definition of the covariance matrix specifically?

Covariance between fluctuating number of random variables

Covariance of two Monte Carlo estimations

Covariance between sum of iid random variables and sum of indicator functions

Express gaussian uncertainty in another frame

Unclear step in the proof that correlation coefficient lies in the intervall [-1, 1]

Is non semi-positive definite matrix invertible?

A version of PCA which chooses regressors based on covariance between responses and X

Covariance of products of dependent random variables

Commutative covariance matrixes

what does it mean if $\text{Cov}(X,Y)$ = $\text{Cov}(Y,Y)$ = $\text{Var}(Y)$

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