options linesize=80;
*filename rain 'e:\Stat210\raindata.txt' ;
filename rain 'h:\HAL\Courses\Stat210\raindata.txt' ;
*;
* read in data;
*;
data rain;
    infile rain firstobs=2;
    input rainfall treat;
run;
*;
* histograms of rainfall by treatment group;
*;
proc gchart data=rain;
    vbar rainfall;
    by treat;
*;
* univariate statistics;
*;
proc univariate data=rain;
    var rainfall;
    by treat;
*;
* two-sample t-test;
*;
proc ttest data=rain;
    class treat;
    var rainfall;
run;