Question

Let $X,Y,Z$ be three random variables such that the correlation coefficients $\rho_{XY}=0.2, \rho_{YZ}=0.2$, what values can $\rho_{XZ}$ take?

score 702 · Answer 1 · 2026-03-26 01:23:41

702

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Let $X,Y,Z$ be three random variables such that the correlation coefficients $\rho_{XY}=0.2, \rho_{YZ}=0.2$, what values can $\rho_{XZ}$ take?

Published on 26 Mar 2026 - 1:23

score 60 · Answer 2 · 2026-04-02 12:48:07

60

Views

Hypothesis testing on sample mean when observation are correlated

Published on 02 Apr 2026 - 12:48

score 103 · Answer 3 · 2022-05-06 22:29:34

103

Views

Range of correlation

Published on 06 May 2022 - 22:29

score 59 · Answer 4 · 2022-05-07 01:33:21

59

Views

Maximum number of random variables to make pairwise correlation coefficient less than C

Published on 07 May 2022 - 1:33

score 602 · Answer 5 · 2022-05-15 18:07:42

602

Views

Autocorrelation of a random process

Published on 15 May 2022 - 18:07

score 70 · Answer 6 · 2026-03-26 17:51:35

70

Views

"Leave-on-out Correlation" between Matrices

Published on 26 Mar 2026 - 17:51

score 28 · Answer 7 · 2022-05-19 21:47:29

28

Views

If a correlation matrix is a band matrix with value 1 on the band, is this equivalent to correlation matrix with all 1?

Published on 19 May 2022 - 21:47

score 203 · Answer 8 · 2026-02-25 07:55:03

203

Views

Sampling from a Poisson distribution

Published on 25 Feb 2026 - 7:55

score 60 · Answer 9 · 2022-05-23 13:01:30

60

Views

Bounding Correlation

Published on 23 May 2022 - 13:01

score 173 · Answer 10 · 2022-05-25 13:00:03

173

Views

tanh transformation of correlation matrix

Published on 25 May 2022 - 13:00

score 189 · Answer 11 · 2022-06-01 18:33:16

189

Views

Let $X\sim N(0,1)$ and $Y=X²-1$. Show that $X$ and $Y$ are uncorrelated but not independent.

Published on 01 Jun 2022 - 18:33

score 434 · Answer 12 · 2026-02-23 13:42:58

434

Views

Covariance of Bernoulli random variables

Published on 23 Feb 2026 - 13:42

score 88 · Answer 13 · 2026-03-25 11:11:43

88

Views

Correlation not = Causation, but if No Correlation, No Causal Relation Exists? True or No?

Published on 25 Mar 2026 - 11:11

score 953 · Answer 14 · 2026-03-31 09:19:02

953

Views

Why can't Pearson's correlation coefficient be calculated for ordinal data?

Published on 31 Mar 2026 - 9:19

score 37 · Answer 15 · 2022-06-20 06:38:02

37

Views

When independent variables covary (not correlate) in the regression, why this happen?

Published on 20 Jun 2022 - 6:38

List Question

Let $X,Y,Z$ be three random variables such that the correlation coefficients $\rho_{XY}=0.2, \rho_{YZ}=0.2$, what values can $\rho_{XZ}$ take?

Hypothesis testing on sample mean when observation are correlated

Range of correlation

Maximum number of random variables to make pairwise correlation coefficient less than C

Autocorrelation of a random process

"Leave-on-out Correlation" between Matrices

If a correlation matrix is a band matrix with value 1 on the band, is this equivalent to correlation matrix with all 1?

Sampling from a Poisson distribution

Bounding Correlation

tanh transformation of correlation matrix

Let $X\sim N(0,1)$ and $Y=X²-1$. Show that $X$ and $Y$ are uncorrelated but not independent.

Covariance of Bernoulli random variables

Correlation not = Causation, but if No Correlation, No Causal Relation Exists? True or No?

Why can't Pearson's correlation coefficient be calculated for ordinal data?

When independent variables covary (not correlate) in the regression, why this happen?

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