is stata a regression model can you use a weight variable in r what type regression model do i need for r what is the r package used for survey regression is a stratum in stata regression r what variables can be used for regression in r how to build regression model with singleton data why use r instead of stata can r do a regression with only one psu can stata be used for survey analysis why use r regression vs stata how can i use survey in r can you test survey data r with psu why do you use stata instead of survey can you use statistics in survey r calculate strata how to reorder a survey in r with psu data what to use in survey r which package use psu for regression how to write a survey in r?