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标题: 请教如何做有返回的和无返回的随机抽样？ [打印本页]

作者: shiyiming 时间: 2004-12-7 00:30
标题: 请教如何做有返回的和无返回的随机抽样？
T Y!

作者: shiyiming 时间: 2012-7-31 18:29
标题: Re: 请教如何做有返回的和无返回的随机抽样？
[code:1qpmoxvr]

data ads;
do i =1 to 100;
output;
end;
run;
/* simple random sampling */
proc surveyselect data=ads
   method=srs
   sampsize=10
   seed=12345
   out=bds;
   id _all_;
run;
/* unrestricted random sampling */
proc surveyselect data=ads
   method=urs
   sampsize=10
   seed=12345
   out=cds;
   id _all_;
run;

[/code:1qpmoxvr]

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