How to deal with 100+ levels in categorical variable in multiple linear regression?
10256
Principled way of collapsing categorical variables with many levels?
128980
How to deal with factors with rare levels in cross-validation?
38616
Clusering based on categorical variables?
84693
Interpreting linear regression with NA for estimates
143711
How to detect multicollinearity in a logistic regression where all the independent variables are categorical and binary?
2219
How do you deal with "nested" variables in a regression model?
27545
Can I probe cross-level interactions without random slope in a hierarchical linear model?
9915
Adding Interaction Terms to Multiple Linear Regression, how to standardize?
42483
Logistic regression with {-1,+1} labels
134322
How to encode categorical variables for neural networks
63498
How to split r-squared between predictor variables in multiple regression?
1209
How to deal with perfect separation in logistic regression?
35219
How do I study the "correlation" between a continuous variable and a categorical variable?
130815
interpreting level-log model that has a percentage variable
5445
Obtaining a formula for prediction limits in a linear model (i.e.: prediction intervals)
141070
How to perform a logistic regression for more than 2 response classes in R
71974
Is it feasible to transform each variable differently while doing multiple regression