C 语言实例计算标准偏差。
实例
#include <stdio.h>#include <math.h> float calculateSD(float data[]); int main(){ int i; float data[10]; printf("输入10个元素: "); for(i=0; i < 10; ++i) scanf("%f", &data[i]); printf("\n标准偏差 = %.6f", calculateSD(data)); return 0;} float calculateSD(float data[]){ float sum = 0.0, mean, standardDeviation = 0.0; int i; for(i=0; i<10; ++i) { sum += data[i]; } mean = sum/10; for(i=0; i<10; ++i) standardDeviation += pow(data[i] - mean, 2); return sqrt(standardDeviation/10);}
输出结果为：
输入10个元素: 12345678910标准偏差 = 2.872281