public void Residuals_ReturnsCorrect()
{
// prereq
Average_ReturnsAverageOfArray();
// arrange
float[] data = new float[] { 2, 4, 6 };
float mean = data.Average();
float[] actual = new float[data.Length];
for (int i = 0; i < data.Length; i++)
{
actual[i] = data[i] - mean;
}
// act
float[] resi = PMath.Residuals(data);
// assert
for (int i = 0; i < data.Length; i++)
{
Assert.AreEqual(actual[i], resi[i], i + ":" + TestHelper.ShowVariables(actual[i], resi[i]));
}
}