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need a version of sd [or var] to return population standard deviation (using n rather than n-1 denominator) that will operate on a dataframe containing missings, i.e. unequal n's. any ideas? thx, ted. ---------------------------------------- Ted (Edwin) Blew tblew...
need a version of sd [or var] to return population standard deviation (using n rather than n-1 denominator) that will operate on a dataframe containing missings, i.e. unequal n's. any ideas? thx, ted. ---------------------------------------- Ted (Edwin) Blew tblew...
is there a way to identify the *numeric* data elements (columns) in a data.frame that contains both numeric and character data elements? thanks in advance, ted. ---------------------------------------- Ted Blew Educational Testing Service MS 22T Princeton NJ 08541 tblew at ets...
Henrik, yes, probably right, since the way i load the script is via the 'File/Open Script' command in the windows R interface. i tried 'File/Source R code...' and that works fine. thanks very much for your prompt response...
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