大數定律均值逼近期望的過程

data sample; n=10000; xsum=0; do i=1 to n; x=0; do j=1 to n; v=rand('uniform'); if v>0.5 then v=1; else v=0; x=x+v; end; xsum=xsum+x; y=xsum/i; output; end; put n= y=; keep x y i; run; p

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