what does df=give as what is df in logit if the model does not correctly predict the data, what is df what is data_frame in r which logit model does the data analysis on how to test a logit model on new data how does df work in logit df = a.factor(df$sell), a.gender how to test logit model how to tell if a model is based on a new set of data in logit how do you test a logit model in r what is the value of df in logit? does logit work on new data if a linear model of income is based on new data what is df$gender how to test a logistic model how to find the gender of the logit model in r how to test a logit model how can you test a logit model how to test a logit model