/******************************************************************************\
*                                                                              *
*   Assignment 1 - Statistical Analysis of Text File                           *
*                                                                              *
*   flamingspinach                                                             *
*                                                                              *
*   Started:  2006-10-03                                                       *
*   Finished: 2006-10-03                                                       *
*                                                                              *
*   NOTE: See accompanying note for information on the algorithm               *
*             http://www.mathbin.net/908                                       *
*                                                                              *
\******************************************************************************/

#include <iostream>
#include <iomanip>
#include <fstream>
using namespace std;

int main () {
    ifstream in ("data.txt");
    int i = 0, ranges [11] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
    double x, max = 0, min = 11, sum = 0, sum2 = 0;
    for (;;) {
        if (in >> x) ++i; else break;
        sum += x;
        sum2 += x * x;
        if (x < min) min = x;
        if (x > max) max = x;
        ++ranges[(int)x];
    }
    sum2 -= sum * sum / i;
    
    cout << setprecision(15);
    cout << "Mean of the values is:       " << sum / i << endl
         << "Variance of the values is:   " << sum2 / i << endl
         << "Maximum of the values is:    " << max << endl
         << "Minimum of the values is:    " << min << endl << endl;
    for (int c = 0; c < 11; ++c)
    cout << "Number of values in interval [" << setw(2) << c << ", "
         << setw(2) << (c+1) << "):   " << ranges[c] << endl;
    cout << endl;
    
    system("pause");
    return 0;
}