public void EmptySamples()
{
RunningStatistics stats = new RunningStatistics();
Assert.AreEqual(0, stats.Count);
Assert.AreEqual(0, stats.Min);
Assert.AreEqual(0, stats.Max);
Assert.AreEqual(0, stats.Mean);
Assert.AreEqual(0, stats.StdDev);
}
public void StandardDevSmallCollection()
{
RunningStatistics stats = new RunningStatistics();
stats.AddSample(2.0);
stats.AddSample(4.0);
stats.AddSample(4.0);
stats.AddSample(4.0);
stats.AddSample(5.0);
stats.AddSample(5.0);
stats.AddSample(7.0);
stats.AddSample(9.0);
Assert.AreEqual(8, stats.Count);
Assert.AreEqual(2.0, stats.Min);
Assert.AreEqual(9.0, stats.Max);
AreEqual(5, stats.Mean);
// low number of samples yields low precision of the running stdDev estimation
AreEqual(2, stats.StdDev, 0);
}
public PerfMetric(PerformanceCounter perfCounter)
{
this.PerfCounter = perfCounter;
this.Stats = new RunningStatistics();
}
