Match Pair Sampling for Retail Stores

[RobertNYC]

Hi all, 

I am doing a product testing experiment (Product A vs Product B) and I want to do match pair sampling to determine the control group.  

My total test sample size is 30 stores and out of about 600 total stores I need to find 30 control stores.   Any recommendations using SAS to accomplish this?

Thanks. 

[PGStats]

What is the relation between stores and products, Are you comparing stores or products, or something else?

[RobertNYC]

Hi, 

I am testing to see if the lift in sales of one type of pants in test stores is statistically significant to control stores and the control 

treatment group is yet to be determined.