01: #include <stdio.h>
02:
03: int main(void)
04: {
05: float a[10];
06: int i, n;
07: float avg = 0;
08: float var = 0;
09:
10: printf("n=");
11: scanf("%d", &n);
12: for(i=0; i<n; i++){
13: printf("a[%d]=", i);
14: scanf("%f", &a[i]);
15: }
16:
17: for(i=0; i<n; i++)
18: {
19: avg += a[i];
20: }
21: avg /= n;
22: for(i = 0;i < n;i++)
23: {
24: var += (a[i]-avg)*(a[i]-avg);
25: }
26: var /= n;
27:
28: printf("AVG(VAR)=%f(%f)", avg, var);
29:
30: return 0;
31: }