Relationship between correlation of x vs. x+y and y vs. x+y
55707
Why does the correlation coefficient between X and X-Y random variables tend to be 0.7
9930
Correlations between continuous and categorical (nominal) variables
39963
How to get correlation between two categorical variable and a categorical variable and continuous variable?
41353
Correlation between three variables question
68269
Regression Proof that the point of averages (x,y) lies on the estimated regression line
27127
Calculating $\iint (x+y) \, dx \, dy$
2315
How to prove that $\lVert x + y\rVert = \lVert x\rVert + \lVert y \rVert \implies \lVert tx + (1-t)y\rVert = t\lVert x\rVert + (1-t)\lVert y \rVert$?
5686
Similarities and differences between correlation and regression
79138
Correlation between a nominal (IV) and a continuous (DV) variable
39894
Graphing y=x^2 and y=x
30082
Using regression to prove that X is a necessary / condition condition for Y
34259
Variance of linear combinations of correlated random variables
51189
The equivalence of sample correlation and R statistic for simple linear regression
99553
Differences between tetrachoric and Pearson correlation
52242
Interpreting coefficients of an interaction between categorical and continuous variable
14283
Correlation between discrete and continuous variables
144538
Sanity check question about correlation between log-normal random variables