Could anyone please help me the way to calculate the covariance of two dichotomous variable in survey data please. Thank you very much.
Hi,
Why covariance? What are trying to study based this?
From my literature review, I need to adjust the coeficient of a logistics regression which requires the calcilation of covariance between 2 variables. In my case both a binary. Since my data are survey data, I need to use proc surveyreg but couldn't figure out the way to calculate the covariance with proc surveyfreq. Hope that helps.
If I was right, I remember PROC DISTANCE can do this.
Thank you for helping. I think Proc Distance are for random sampling data since it doesn't provide the options for variance estimate such as BRR method in other proc survey
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