http://blog.renren.com/blog/220869953/728359353?from=fanyeNew
1.Pearson相关系数
proc corr data=sashelp.class pearson cov;
var age height weight;
with height weight;
run;
2.偏相关系数
proc reg data=sashelp.class;
model height=weight /pcorr1 pcorr2;
quit;
结果：Squared Partial Corr Type I II：0.77
proc corr data=sashelp.class;
var height weight;
partial age;
run;
结果:Partial Correlation 0.70
proc glm data=sashelp.class;
model weight height = ;
manova /printe;
run;
结果：Partial Correlation 0.88