what is the problem with a categorical predictor? when do cities happen in statistics logit how many times are different cities in a logit how long do city predictors occur is the top city in logit a predictor what is the problem of maintaining categorical variables? how many times do all cities occur in the logit model how many times do cities occur? what is the problem of having too many variables in a logit model? what is the problem of a categorical predictor how to maintain categorical predictors what is categorical predictor why should a model retain factor levels what is the problem with retaining all factor level in logit how many times does city occur when to retain factor levels? what is the problem with retaining factor level how many different cities are in the sample of logit does city always occur once when modeling why is city a categorical variable