added documentation for CI

2014-11-23 00:29:35 -08:00
parent b673118473
commit 74b57a41fe
1 changed files with 2 additions and 0 deletions
@@ -95,6 +95,8 @@ func (os *OnlineStat) StdDev() float64 {
 	return math.Sqrt(os.Variance())
 }

+// CI returns a 95% confidence interval
+// https://en.wikipedia.org/wiki/Confidence_interval
 func (os *OnlineStat) CI() (float64, float64) {
 	// 95% from http://mathworld.wolfram.com/ConfidenceInterval.html
 	conf := 1.95996