I want to creat stacked bar chart where each bar stands for the mean of a variable. I tried using "graph v1 v2 v3, bar means by (v4) stack" to produce this but STATA said that it was invalid. It looks like "stack" cannot be used with means (i.e. "stack" option can only have the bar to represent counts). Do you have any idea to do stacked bar chart on mean?
Thanks a lot for your help!
Xiaoqu
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