#include <stdio.h>
#include <math.h>
void main() {
    int n;
    printf("Enter a total number of values");
    scanf("%d",&n);
    int a[n]; 
    double sum=0,mean,var=0;
    printf("Enter all number");
    for(int i=0;i<n;i++){ 
        scanf("%d",&a[i]); 
        sum+=a[i]; 
    }
    mean=sum/n;
    for(int i=0;i<n;i++) 
        var+=pow(a[i]-mean,2);
    var/=n;
    printf("Mean=%.2f Var=%.2f SD=%.2f",mean,var,sqrt(var));
    
}