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coolmac
Calcite | Level 5

Trying to find the relationship between AGE (continuous) and GENDER (categorical) variables in my dataset using SAS (v9.4). I used the below code.

 

proc glm data = myfile;
class GENDER;
 model AGE = GENDER / solution;
run;

 

How to verify if the LINE assumptions of a linear regression model are met or violated in the above case (using SAS)?

L - Linear

I - Independent

N - Normality

E -Equal Variance

 

Please provide the SAS code to be able to do that.

1 REPLY 1
Reeza
Super User
With this case, your question simplifies to the assumptions of an ANOVA/T-test so you're mostly ok as long as your variances are similar.

You can use PROC NPAR1WAY to assess distributions.

To test for equal variances see this example:
https://documentation.sas.com/?docsetId=statug&docsetVersion=15.1&docsetTarget=statug_glm_examples10...

Note the PLOT=Diagnostics which will provide some diagnostic plots.

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