I have two variables, score and year, representing test scores for year=2005,...,2013. If I want to standardize the test scores the simplest ways to do it is
egen zscore = std(score)
but that standardizes them using the mean and SD of all years together. I would prefer to standardize them using the mean and SD of the first year, 2005. What's the simplest way to do that.
Bonus round: my data are multiply imputed. Is there still a simple alternative to this?
mi passive: egen zscore = std(score)
egen zscore = std(score)
but that standardizes them using the mean and SD of all years together. I would prefer to standardize them using the mean and SD of the first year, 2005. What's the simplest way to do that.
Bonus round: my data are multiply imputed. Is there still a simple alternative to this?
mi passive: egen zscore = std(score)
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