jlfx1.sas

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

title'聚类分析';
data ex;input x1 x2@@;
cards;
2 5 2 3 4 4 4 3 -4 3 -2 2 -3 2 -1 -3
;
proc plot;
plot x2*x1;
proc cluster  method=single;   /*最短距离法*/
proc tree;run;