st: further on the weighted average

[Yanjun Bao <ybao1@uic.edu>]

I wrote the following command lines accoridng to the help file.

use ki00_wgt;
egen group=group(site_id);
compress group;

gen wtmean=.;
qui forvalues i = 1/196 {;
      su po4c [w=rsp_wgt] if group == 'i';
      replace wtmean = r(p196) if group p == 'i';
};


Now I got the error message that i is an invalid name.  What should I make
of that?

Thanks,

Carol
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