Function TestSpec_PublicAPI_StdDev

pkg/stats/spec_test.go:102–110

TestSpec_PublicAPI_StdDev validates that StdDev and SampleStdDev equal the square root of their respective variances as described in the README.md. Specification: - StdDev: "Returns population standard deviation" - SampleStdDev: "Returns sample standard deviation"

(t *testing.T)

//   - StdDev: "Returns population standard deviation"
//   - SampleStdDev: "Returns sample standard deviation"
func TestSpec_PublicAPI_StdDev(t *testing.T) {
	var sv StatVar
	for _, v := range []float64{2, 4, 4, 4, 5, 5, 7, 9} {
		sv.Add(v)
	}

	assert.InDelta(t, math.Sqrt(sv.SampleVariance()), sv.SampleStdDev(), 1e-9,
		"SampleStdDev should equal sqrt(SampleVariance)")
}

// TestSpec_PublicAPI_Median_OddCount validates that Median returns the middle
// value for an odd-count set as described in the README.md.