missing1.sas

SAS for Windows统计分析系统教程,里面有源码

options nodate nonumber;
data missing1;
missing x y;
   input number height weight chest age;
      if weight=1 then weight=.;
      if chest=-9 then chest=.;
cards;
101 156.3 51.2 58.9 18
102 164.2 50.4 -9   21
103     x 45.9 59.4 19
104 161.2  1   61.3 25
105     y 54.1 57.8 27
106 159.8 52.9 61.9 30
;
proc means;
   var height weight chest age;
run;
proc corr;
   var height weight chest age;
run;