private static void f_cdf_test()
//****************************************************************************80
//
// Purpose:
//
// F_CDF_TEST tests F_CDF.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 27 February 2007
//
// Author:
//
// John Burkardt
//
{
int i;
int seed = 123456789;
Console.WriteLine("");
Console.WriteLine("F_CDF_TEST");
Console.WriteLine(" F_CDF evaluates the F CDF;");
Console.WriteLine(" F_PDF evaluates the F PDF;");
Console.WriteLine(" F_SAMPLE samples the F PDF;");
const int m = 1;
const int n = 1;
Console.WriteLine("");
Console.WriteLine(" PDF parameter M = " + m + "");
Console.WriteLine(" PDF parameter N = " + n + "");
if (!FProb.f_check(m, n))
{
Console.WriteLine("");
Console.WriteLine("F_CDF_TEST - Fatal error!");
Console.WriteLine(" The parameter values are illegal.");
return;
}
Console.WriteLine("");
Console.WriteLine(" X PDF CDF");
Console.WriteLine("");
for (i = 1; i <= 10; i++)
{
double x = FProb.f_sample(m, n, ref seed);
double pdf = FProb.f_pdf(x, m, n);
double cdf = FProb.f_cdf(x, m, n);
Console.WriteLine(" "
+ x.ToString(CultureInfo.InvariantCulture).PadLeft(12) + " "
+ pdf.ToString(CultureInfo.InvariantCulture).PadLeft(12) + " "
+ cdf.ToString(CultureInfo.InvariantCulture).PadLeft(12) + "");
}
}
private static void f_sample_test()
//****************************************************************************80
//
// Purpose:
//
// F_SAMPLE_TEST tests F_SAMPLE.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 02 April 2016
//
// Author:
//
// John Burkardt
//
{
const int SAMPLE_NUM = 1000;
int i;
int seed = 123456789;
double[] x = new double [SAMPLE_NUM];
Console.WriteLine("");
Console.WriteLine("F_SAMPLE_TEST");
Console.WriteLine(" F_MEAN computes the F mean;");
Console.WriteLine(" F_SAMPLE samples the F distribution;");
Console.WriteLine(" F_VARIANCE computes the F variance;");
const int m = 8;
const int n = 6;
Console.WriteLine("");
Console.WriteLine(" PDF parameter M = " + m + "");
Console.WriteLine(" PDF parameter N = " + n + "");
if (!FProb.f_check(m, n))
{
Console.WriteLine("");
Console.WriteLine("F_SAMPLE_TEST - Fatal error!");
Console.WriteLine(" The parameters are not legal.");
return;
}
double mean = FProb.f_mean(m, n);
double variance = FProb.f_variance(m, n);
Console.WriteLine("");
Console.WriteLine(" PDF mean = " + mean + "");
Console.WriteLine(" PDF variance = " + variance + "");
for (i = 0; i < SAMPLE_NUM; i++)
{
x[i] = FProb.f_sample(m, n, ref seed);
}
mean = typeMethods.r8vec_mean(SAMPLE_NUM, x);
variance = typeMethods.r8vec_variance(SAMPLE_NUM, x);
double xmax = typeMethods.r8vec_max(SAMPLE_NUM, x);
double xmin = typeMethods.r8vec_min(SAMPLE_NUM, x);
Console.WriteLine("");
Console.WriteLine(" Sample size = " + SAMPLE_NUM + "");
Console.WriteLine(" Sample mean = " + mean + "");
Console.WriteLine(" Sample variance = " + variance + "");
Console.WriteLine(" Sample maximum = " + xmax + "");
Console.WriteLine(" Sample minimum = " + xmin + "");
}
