what is the difference of categorical variables and explanatory variables? average error % which is a qualitative variable that has the highest number of category average number of errors per hour what is the number of categories for an explanatory variable? how many categories of explanatory variables how many categories of variables in sa how many categories are there in a variable is the average error count a categorical variable what is the expected number of errors in the data why are a variable's numbers of categories high how many categories are in an explanatory variable how many categories does an explanatory variable have which variable in excel represents the average number of errors somebody experiences per hour? what is the impact of a categorical variable how many categories are there of the variable eag how many categories are there in an explanatory variable are os variables categorical calculating the number of categories of an explanatory variable? how many categories are there in a variable