/// <summary>Add a number of samples and their sum to the running stat</summary>
/// <param name="numSamples">number of samples</param>
/// <param name="sum">of the samples</param>
public virtual void Add(long numSamples, long sum)
{
lock (this)
{
intervalStat.Add(numSamples, sum);
SetChanged();
}
}
public virtual void TestSimple()
{
SampleStat stat = new SampleStat();
Assert.Equal("num samples", 0, stat.NumSamples());
Assert.Equal("mean", 0.0, stat.Mean(), Epsilon);
Assert.Equal("variance", 0.0, stat.Variance(), Epsilon);
Assert.Equal("stddev", 0.0, stat.Stddev(), Epsilon);
Assert.Equal("min", SampleStat.MinMax.DefaultMinValue, stat.Min
(), Epsilon);
Assert.Equal("max", SampleStat.MinMax.DefaultMaxValue, stat.Max
(), Epsilon);
stat.Add(3);
Assert.Equal("num samples", 1L, stat.NumSamples());
Assert.Equal("mean", 3.0, stat.Mean(), Epsilon);
Assert.Equal("variance", 0.0, stat.Variance(), Epsilon);
Assert.Equal("stddev", 0.0, stat.Stddev(), Epsilon);
Assert.Equal("min", 3.0, stat.Min(), Epsilon);
Assert.Equal("max", 3.0, stat.Max(), Epsilon);
stat.Add(2).Add(1);
Assert.Equal("num samples", 3L, stat.NumSamples());
Assert.Equal("mean", 2.0, stat.Mean(), Epsilon);
Assert.Equal("variance", 1.0, stat.Variance(), Epsilon);
Assert.Equal("stddev", 1.0, stat.Stddev(), Epsilon);
Assert.Equal("min", 1.0, stat.Min(), Epsilon);
Assert.Equal("max", 3.0, stat.Max(), Epsilon);
stat.Reset();
Assert.Equal("num samples", 0, stat.NumSamples());
Assert.Equal("mean", 0.0, stat.Mean(), Epsilon);
Assert.Equal("variance", 0.0, stat.Variance(), Epsilon);
Assert.Equal("stddev", 0.0, stat.Stddev(), Epsilon);
Assert.Equal("min", SampleStat.MinMax.DefaultMinValue, stat.Min
(), Epsilon);
Assert.Equal("max", SampleStat.MinMax.DefaultMaxValue, stat.Max
(), Epsilon);
}