What does $(X'X)^{-1}$ matrix mean in regression?
56923
Are estimates of regression coefficients uncorrelated?
50113
Interpretation of log(1 + x) transformed predictor
121767
Why $\det(A^{-1}) = 1/\det(A)$?
61051
Covariance term in simple linear regression
107390
Why is (-1)(-1) = 1?
8823
Why the significance of terms in orthogonal polynomial regression changes with the degree of the regression
123794
Interpretation of LASSO regression coefficients
31884
How to interpret regression coefficients when response was transformed by the 4th root?
118414
What is the relationship between the function $\mathbb{E}(Y \mid X = x)$ and linear regression?
7970
Why does the product of the bivariate regression coefficients of the $y$-on-$x$ line and $x$-on-$y$ line equal the square of the correlation?
42024
What is the distribution function of $\left( \begin{smallmatrix} X \\ (-1)^nX \\ \end{smallmatrix}\right)$ where $X\sim N(0,1)$
87993
Proof of normal equation in regression using tensor notation
9356
Derivation of the formula for Ordinary Least Squares Linear Regression
29006
Kernel ridge regression with matrix-vector data set $S := \{ X_i, y_i \}_{i=1}^{N}$?
28567
Hat matrix with simple linear regression
90302
How do we interpret the results of regression for log transformed data containing negative values, $\log(Y-\min(Y)+1)$?
51682
Covariance matrix explanation