chingpoo 发表于 2011-7-4 13:16 
用SAS画统计数据的直方图并在其上加正态分布的图我知道怎么画了,但怎么找不到加画卡方分布图的方法呢?请各位指教
You may consider using the gamma option in histograms. The chi square is a special case of a gamma distribution.
Here is an example where y =~ log normal.
data t1;
do i=1 to 1000;
x=0.5*rannor(123);
y=exp(x);
output;
end;
run;
proc univariate data=t1;
var x y;
histogram y/ gamma;
run;