how do you separate covariates in an r model? which categorical variable is excluded from r what variables must be removed to r when to remove one category from a quasipoisson model how to remove year from lm model which categorical variable is used for a continuous response? how many covariates are in a glm model what is the difference between classification and categorical variable can you remove all of the years from a model which categorical variable is included in my model when removing the whole year or year? does a cumulative model remove all covariates what are categorical variable how do you remove the year from a quasipoisson model? pcccvccvvcccccccccccccccc when removing covariate from a quadratic model can a categorical variable be a continuous variable in glm what is r for r categorical variable can r remove years from a model can r remove a categorical variables r remove one category from a quasipoisson model how to remove one continuous variable in the r model