public void testStddev()
{
IRunningAverageAndStdDev runningAverage = new FullRunningAverageAndStdDev();
Assert.AreEqual(0, runningAverage.GetCount());
Assert.True(Double.IsNaN(runningAverage.GetAverage()));
runningAverage.AddDatum(1.0);
Assert.AreEqual(1, runningAverage.GetCount());
Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));
runningAverage.AddDatum(1.0);
Assert.AreEqual(2, runningAverage.GetCount());
Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
Assert.AreEqual(0.0, runningAverage.GetStandardDeviation(), EPSILON);
runningAverage.AddDatum(7.0);
Assert.AreEqual(3, runningAverage.GetCount());
Assert.AreEqual(3.0, runningAverage.GetAverage(), EPSILON);
Assert.AreEqual(3.464101552963257, runningAverage.GetStandardDeviation(), EPSILON);
runningAverage.AddDatum(5.0);
Assert.AreEqual(4, runningAverage.GetCount());
Assert.AreEqual(3.5, runningAverage.GetAverage(), EPSILON);
Assert.AreEqual(3.0, runningAverage.GetStandardDeviation(), EPSILON);
}
public void testFull()
{
IRunningAverageAndStdDev average = new FullRunningAverageAndStdDev();
Assert.AreEqual(0, average.GetCount());
Assert.True(Double.IsNaN(average.GetAverage()));
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
average.AddDatum(6.0);
Assert.AreEqual(1, average.GetCount());
Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
average.AddDatum(6.0);
Assert.AreEqual(2, average.GetCount());
Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
Assert.AreEqual(0.0, average.GetStandardDeviation(), EPSILON);
average.RemoveDatum(6.0);
Assert.AreEqual(1, average.GetCount());
Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
average.AddDatum(-4.0);
Assert.AreEqual(2, average.GetCount());
Assert.AreEqual(1.0, average.GetAverage(), EPSILON);
Assert.AreEqual(5.0 * 1.4142135623730951, average.GetStandardDeviation(), EPSILON);
average.RemoveDatum(4.0);
Assert.AreEqual(1, average.GetCount());
Assert.AreEqual(-2.0, average.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
}
public void testFull()
{
IRunningAverageAndStdDev average = new FullRunningAverageAndStdDev();
Assert.AreEqual(0, average.GetCount());
Assert.True(Double.IsNaN(average.GetAverage()));
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
average.AddDatum(6.0);
Assert.AreEqual(1, average.GetCount());
Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
average.AddDatum(6.0);
Assert.AreEqual(2, average.GetCount());
Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
Assert.AreEqual(0.0, average.GetStandardDeviation(), EPSILON);
average.RemoveDatum(6.0);
Assert.AreEqual(1, average.GetCount());
Assert.AreEqual(6.0, average.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
average.AddDatum(-4.0);
Assert.AreEqual(2, average.GetCount());
Assert.AreEqual(1.0, average.GetAverage(), EPSILON);
Assert.AreEqual(5.0 * 1.4142135623730951, average.GetStandardDeviation(), EPSILON);
average.RemoveDatum(4.0);
Assert.AreEqual(1, average.GetCount());
Assert.AreEqual(-2.0, average.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(average.GetStandardDeviation()));
}
public void testStddev()
{
IRunningAverageAndStdDev runningAverage = new FullRunningAverageAndStdDev();
Assert.AreEqual(0, runningAverage.GetCount());
Assert.True(Double.IsNaN(runningAverage.GetAverage()));
runningAverage.AddDatum(1.0);
Assert.AreEqual(1, runningAverage.GetCount());
Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
Assert.True(Double.IsNaN(runningAverage.GetStandardDeviation()));
runningAverage.AddDatum(1.0);
Assert.AreEqual(2, runningAverage.GetCount());
Assert.AreEqual(1.0, runningAverage.GetAverage(), EPSILON);
Assert.AreEqual(0.0, runningAverage.GetStandardDeviation(), EPSILON);
runningAverage.AddDatum(7.0);
Assert.AreEqual(3, runningAverage.GetCount());
Assert.AreEqual(3.0, runningAverage.GetAverage(), EPSILON);
Assert.AreEqual(3.464101552963257, runningAverage.GetStandardDeviation(), EPSILON);
runningAverage.AddDatum(5.0);
Assert.AreEqual(4, runningAverage.GetCount());
Assert.AreEqual(3.5, runningAverage.GetAverage(), EPSILON);
Assert.AreEqual(3.0, runningAverage.GetStandardDeviation(), EPSILON);
}
