is dummy factor a valid factor what types of variables are used in bestglm how to cross validate variable in bestglm why does cross validation not work with categorical variable is cross validation possible with categorical variables which variable cannot cross validate why is cross validation not available? can you use cross validation with dummy variable why is cross validation not available cross validation dummy data cross validation is not available when there are categorical variables what are the limitations of cross validation in bestglm do you test a variable with all the levels does cross validation work with categorical variables why does cross validation fail can you use cross validation with dummy variables does bestglm include categorical variables why is cross-validation not available when there are categorical variable what does the bestglm dummy test indicate? what is the purpose of cross validation of bestglm