public void ProbabilityFunctionTest()
{
IDistribution target = CreateUnivariateContinuousDistribution();
double x = 18.14;
double expected = 0.011697993604177;
double actual = target.ProbabilityFunction(x);
Assert.IsFalse(double.IsNaN(actual));
Assert.AreEqual(expected, actual, 1e-10);
}