public void TestAverage()
{
var a = Math_.Average(1.0, 4.0, 2.0, 7.0, -3.0);
Assert.Equal(a, 2.2);
var m = Math_.Median(1.0, 4.0, 2.0, 7.0, -3.0);
Assert.Equal(m, 2.0);
m = Math_.Median(1.0, 4.0, 2.0, 7.0, -3.0, -1.0);
Assert.Equal(m, 1.5);
}