#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;const int Max_Cnt = 55;
double d[Max_Cnt][Max_Cnt];
double col_ave[Max_Cnt], col_var[Max_Cnt], col_sum[Max_Cnt], std_dev[Max_Cnt], row_sum[Max_Cnt], row_ave[Max_Cnt];const int row = 27;
const int col = 52; //行和列的值根据自己的要求自行调整int main() {freopen("in.txt", "r", stdin);freopen("out.txt", "w", stdout);memset(col_ave, 0, sizeof(col_ave));memset(col_var, 0, sizeof(col_var));memset(col_sum, 0, sizeof(col_sum));memset(row_sum, 0, sizeof(row_sum));double sum = 0;for(int i = 0; i < row; i++) {for(int j = 0; j < col; j++) {scanf("%lf", &d[i][j]);sum += d[i][j];col_sum[j] += d[i][j];row_sum[i] += d[i][j];}}double row_ave = sum / row;double row_var = 0;for(int i = 0; i < row; i++)row_var += (row_sum[i] - row_ave) * (row_sum[i] - row_ave);row_var /= (row - 1);double row_std_dev = sqrt(row_var);printf("row_ave = %lf, row_var = %lf, row_std_dev = %lf\n", row_ave, row_var, row_std_dev);for(int i = 0; i < col; i++)col_ave[i] = col_sum[i] / row;for(int i = 0; i < col; i++) {for(int j = 0; j < row; j++) {col_var[i] += (d[j][i] - col_ave[i]) * (d[j][i] - col_ave[i]);}}for(int i = 0; i < col; i++) {col_var[i] /= (row - 1);std_dev[i] = sqrt(col_var[i]);}double var_sum = 0;for(int i = 0; i < col; i++)var_sum += col_var[i];double alpha = col * (1 - (var_sum / row_var)) / (col - 1);printf("alpha = %lf\n", alpha);for(int i = 0; i < col; i++)printf("ave[%d] = %lf, var[%d] = %lf, std_dev[%d] = %lf\n", i + 1, col_ave[i], i + 1, col_var[i], i+1, std_dev[i]);return 0;
}