Why are interaction terms multiplicative in linear regression?
126294
In multiple regression, why are interactions modelled as products, and not something else, of the predictors?
98586
Mathematical Basis behind inflation of Standard errors of Regression estimates due to multicollinearity
120206
How to interpret coefficients of $x$ and $x^2$ in same regression
87528
Interpreta​tion of main effect when interactio​n term is significan​t (ex. lme)
72361
What is the connection between regularization and the method of lagrange multipliers ?
52242
Interpreting coefficients of an interaction between categorical and continuous variable
13616
Removal of statistically significant intercept term increases $R^2$ in linear model
50219
Centering variables in regression leads to the same model of original variables, why still doing that?
10967
Why is sum of squared residuals non-increasing when adding explanatory variable?
61400
Either quadratic or interaction term is significant in isolation, but neither are together
135975
Why would one suppress the intercept in linear regression?
71727
Calculating and interpreting effect sizes for interaction terms
130013
Nonlinear regression model linear in some parameters
48756
Why are derivatives in interaction terms treated differently from derivatives in the kinetic term?
72998
Is regression line (for a simple "Y given X" regression, no interaction etc) always unique?
154994
Violation of linearity assumption in Logistic Regression
91668
Sign of Estimate (Coefficient) of Interaction Terms