public void SkewnessMatrixTest()
{
double[][] matrix =
{
new double[] { 180 },
new double[] { 182 },
new double[] { 169 },
new double[] { 175 },
new double[] { 178 },
new double[] { 189 },
new double[] { 174 },
new double[] { 174 },
new double[] { 171 },
new double[] { 168 }
};
double expected = 0.77771377;
{
double[] actual = Tools.Skewness(matrix);
Assert.AreEqual(expected, actual[0], 1e-7);
}
{
double actual = Tools.Skewness(matrix.GetColumn(0));
Assert.AreEqual(expected, actual, 1e-7);
}
}
public void SkewnessTest()
{
double[] values = { 3.4, 7.1, 1.5, 8.6, 4.9 };
double expected = -0.00861496080010664;
double actual = Tools.Skewness(values, false);
Assert.AreEqual(expected, actual);
}
public void SkewnessTest2()
{
Accord.Math.Random.Generator.Seed = 0;
double[] values = Accord.Math.Vector.Random(10000000);
double actual = Tools.Skewness(values, true);
Assert.AreEqual(0.00046129386638486271, actual);
}
public void SkewnessTest()
{
double[] values = { 3.4, 7.1, 1.5, 8.6, 4.9 };
double expected = -0.0061643641512110154;
double actual = Tools.Skewness(values);
Assert.AreEqual(expected, actual);
}
