学步园

http://blog.renren.com/blog/220869953/729109705?from=fanyeNew

                             Random Number Generator Functions Available in SAS(FROM:《SAS for Monte Carlo Studies》)

Example:

data sample;
   retain x1-x8;
   do i=1 to 10000;
   x1=ranuni(123);output; /*x1=uniform(123)*/
   x2=rannor(123); output;/*x2=normal(123)*/
   x3=ranbin(123,3,.5);output;/*0.5概率二项分布*/
   x4=ranexp(123);output;/*指数分布*/
   x5=rangam(123,1);output;/*1为伽马分布的参数*/
   x6=ranpoi(123,2);output;/*2为泊松分布均值参数*/
   x7=rantbl(12,0.1,0.2,0.3,0.4);output;/*不等概率分布*/
   x8=rantri(123,0.5);output;/*？？*/
   end;run;proc print;run;

更多的分布函数见:

http://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a001466748.htm