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    Compare change in test/control population means

    I would like to do a retrospective observational study on some data. There was some functionality added to customer software and the question is does the added funtionality increase positive member outcomes? I have been building out my datasets with the idea of comparing the treatment group...
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    Is my two sample t-test valid?

    I am trying to determine if an intervention program is having an impact on a person's score. The score variable is continuous between 0 and 1. I have data from my test group before and after intervention and want to compare to a control group (people not exposed to the intervention). I created...
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    Is my association significant?

    I am analyzing a program where people participate with the hopes of having event occur(event=1). The program has phases that occur in sequence but the sequence is different across the participants. I am analyzing one specific phase and trying to determine if its sequence position is...
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    Help interpreting results of categorical variable analysis

    Hello, I would like to confirm my analysis for two categorical variables, X and Y. Where both X and Y are binary (0,1). Given a null hypothesis that X and Y are independent I get the following results from my data: Observed results: X0, Y0 = 1,300,243 X0, Y1 = 1,140,705 X1, Y0 = 188 X1, Y1 =...