Hi, I need to run a linear regression with two categorical variables with 3 plus levels and one continuous variable on a continuous response variable, and is Thus using proc GLM. Continuous variables: - Price - rating Categorical varibles: - product=(agriculture, rental, industry) - customer_segment=(key, focus, corporate) Is it possible to run the following regression, and if so how do you specify the interaction terms: Proc GLM data=model1_data2 alpha=0.75; class product customer_segment; model price=rating product customer_segment industry*rating industry*key / solution; output out=model1_v2_out r=res p=benchmark2 lcl=Q25 ucl=Q75; Data model1_data2; set model1_v2_out; run; So my issue is that i don't know how to specify interaction terms only involving specific levels of the categorical variable. Hopes this makes sence. I'm using SAS 9.4 Best, Andreas
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