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    Comparing results of a promotion camapign: Control vs Treatment Sub-Group

    I'm looking for some clarification on the correct way to test the difference between groups. At my company we ran a promotional campaign for credit card customers with a chance to win a prize. We took all customers who had a credit card and divided them into a Control Group and Treatment Group...
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    Rolling quarters and four-quarters ended

    Hi, Im working on a financial project that is the past calculated its number on quarterly basis. It would then also have a 4-quarters ended calculation as well. However now we need to run the calculations on rolling quarter basis, in other words every month we run the data for the pervious 4...