what is a qualitative variable called when it is interacting with a treatment how to select variables to improve a regression which method for selection is most effective for selecting and evaluating variables what is the standard method of variable selection in a logistic regression? what is a variable that is qualitatively interacting what is variable selection in a logistic regression model how is variable selection used in regression which method is used when selecting a variable for treatment in regression testing? how to select a variable which variable is selected in the selection process in logistic regression what is the method of variable selection in regression is variable selection based on prediction why are variable selection important how to select variables for the regression what is the difference between logistic regression and variable selection what are qualitative variables in logistic regression which method is used to select qualitatively interacting variables? which of the following is a method used for selective selection which model consists of variables that are qualitatively interacting with other variables? how to select qualitatively interrelated variables