data yours;
input order block treat1 treat2 response;
lines;
;
proc plot;
plot response*order;
title1 check for independence in collection routine;
plot response*treat1;
title2 check for constant variance;
plot response*treat2;
title3 check for constant variance;
PROC GLM;
  CLASSES block treat1 treat2    ;
  MODEL response = block treat1 treat2 treat1*treat2;
output out=yours2 predicted=ypred residual=z;
 
proc standard std=1.0 data=yours2;
     var z;
proc rank normal=blom;
 var z;
 ranks nscore;
proc print;
proc plot;

 plot z*nscore/vref=0 href=0 hpos=50;