まえだ - 経済統計練習帳

var point=new Array();
var delta=new Array();
 
function sample(){
 
 
number=193;
 
for(tr=1;tr<10001;tr++){
point[1]=0;
point[2]=0;
point[3]=0;
for(s=1;s<number+1;s++){
p1=Math.random();
n=1;
if(p1>0.5)n=2;
if(p1>0.75)n=3;
point[n]=point[n]+1;
}
 
f1=193*0.5;
f2=193*0.25;
f3=193*0.25;
 
a1=(point[1]-f1)*(point[1]-f1)/f1;
a2=(point[2]-f2)*(point[2]-f2)/f2;
a3=(point[3]-f3)*(point[3]-f3)/f3;
 
delta[tr]=a1+a2+a3;
 
}
 
a1=(72-f1)*(72-f1)/f1;
a2=(65-f2)*(65-f2)/f2;
a3=(56-f3)*(56-f3)/f3;
 
a4=a1+a2+a3;
 
n=0;
for(s=1;s<10001;s++){
if(delta[s]>a4)n=n+1;  
}
 
 
$("#memo").html(n/10000);
 
 
}