Generatory_liczb_losowych/SS.cpp at master · Filson14/Generatory_liczb_losowych · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
#include "SS.h"


statTest::statTest(Generator * _generator, int _sampleCount):Test(_generator, _sampleCount), mean(0.0), variance(0.0), stdDeviation(0.0), coefVariation(0.0)
{
}

statTest::~statTest()
{
}

double statTest::countMean()
{
    mean = 0.0;

    for (int i = 0; i < sampleCount; i++)
        mean += samples[i];

    mean /= sampleCount;

    return mean;
}

double statTest::countVariance()
{
    variance = 0.0;
    countMean();

    for (int i = 0; i < sampleCount; i++)
        variance += pow((samples[i] - mean), 2);

    variance /= (sampleCount - 1);

    return variance;
}

double statTest::countDeviation()
{
    countVariance();

    stdDeviation = sqrt(variance);

    return stdDeviation;
}

double statTest::countVariation()
{
    countDeviation();

    coefVariation = stdDeviation / mean;

    return coefVariation;
}

void statTest::displayResult(ostream & output)
{
    output << "Basic statistic measure test!" << endl << "Sample: " << endl;

    for (int i = 0; i < sampleCount; i++)
    {
        output << samples[i] << "\t";

        if ((i % 10 == 0) && (i > 0))
        {
            output << endl;
        }
    }

    output << endl << "Mean: \t" << mean << endl << "Variance: \t" << variance << endl << "Standard deviation:\t" << stdDeviation << endl << "Coefficient of variation: \t" << coefVariation << endl << endl;
}

void statTest::runTest(ostream & output)
{
    drawSamples();
    countVariation();
    displayResult(output);
}