how to add dummy variables in multiple regression analysis how much dummy variable for retail price how to use categorical variables is a dummy variable the same as a categorical variable? how to use categorical variable how do categorical variables work what is the categorical variable for retail price in spss can you use a continuous variable to add a categorical variable in multiple regression do we use categorical variables in regression how to add independent variables in a categorical variable in multiple regression how many variables should you add in your model how to add dummy variables what is dummy variable which type of variable is independent and categorical? what are the categorical variables in spss models how many dummies are used for each categorical variable and how many for display location in store? how many independent variables in a categorical variable how many independent variables in a categorical variable in multiple regression how many independent variables in a dummy spss model how to use categorical variables