jsjn2.sas

those are some program of the sas system .and very useful when doing the statistic working .

title'假设检验一';
data ex;
input treat$ number @@;
lg10nu=log10(number);
cards;
a 10 a 20 a 40 a 40 a 40 a 80 a 80 a 160 a 160 a 160 a 320
b 10 b 10 b 10 b 20 b 20 b 20 b 20 b 40 b 40
;
proc ttest;class treat;
var lg10nu number;
run;