📄 sdtest.cpp
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#include <stdio.h>
#include "stddev.h"
/** Table 1 from "Statistics Manual" by Crow et al
stddev = 220.6 (calculated here as 220.6428)
mean = 1589.8
*/
double data[] = {1472, 1315, 1984, 1900, 1646,
1709, 1780, 1571, 1681, 1453,
1799, 1372, 1420, 1612, 1546,
1255, 1818, 1357, 1412, 1775,
1850, 1417, 2057, 1468, 1694,
1776, 1456, 1489, 1618, 1544,
1251, 1422, 1506, 1651, 1687,
1080, 1866, 1713, 1624, 1370,
2107, 1668, 1411, 1654, 1503,
1934, 1451, 1240, 1500, 1606 };
main()
{
size_t N = sizeof( data ) / sizeof(double);
stddev sd;
double mu, sigma;
sigma = sd.sd( data, N );
mu = sd.mean();
printf("stddev = %7.4f, mean = %7.4f\n", sigma, mu );
}
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