lab14_1.cpp

#include <iostream>
#include <cmath>
using namespace std;

void stat(const double[],int,double[]);

int main(){
    double A[] = {1.2,3.5,6.9,7.8,12.5,0.5};
    int N = sizeof(A)/sizeof(A[0]);
    double B[6];
    stat(A,N,B);
    cout << "Arithmetic Mean = " << B[0];
    cout << "\nStandard Deviation = " << B[1];
    cout << "\nGeometric Mean = " << B[2];
    cout << "\nHarmonic Mean = " << B[3];
    cout << "\nMax = " << B[4];
    cout << "\nMin = " << B[5];
    return 0;
}
void stat(const double A[],int N,double B[]){
    for(int i = 0;i<N;i++){
        B[0] += A[i]/N;
    }
    
    double sum_SD = 0;
    for(int i = 0;i<N;i++){
         sum_SD += pow(A[i]-B[0],2);
         B[1] = sqrt(sum_SD/N);
    }
    double sum_GM = 1;
    for(int i = 0;i<N;i++){
         sum_GM *= A[i];
         B[2] = pow(sum_GM,1.0/N);
    }
    double sum_HM = 0;
    for(int i = 0;i<N;i++){
        sum_HM += 1/A[i];
        B[3] = N/sum_HM;
    }
    double min = 1,max=1;
    for(int i = 0;i<N;i++){
        if(A[i]>max)max=A[i];
        if(A[i]<min)min=A[i];
    }
            B[4]=max;
            B[5]=min;
}