#include <stdio.h>
#include <math.h>
double fun(double x[ ], int n)
{
int i;
double avg=0.0, sum=0.0;
for (i=0; i<n; i++)
avg += x[i];
avg /= n;
for (i=0; i<n; i++)
sum += (x[i]-avg)* (x[i]-avg);
return sqrt(sum/n);
}
main( )
{
double score[12] ={
50,60,70,80,90,100,55,65,75,85,95,99};
double aa;
aa= fun(score,12);
printf("%f\n", aa);
}
C语言——计算标准差公式
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转载自blog.csdn.net/weixin_53391957/article/details/120399987
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