diff --git a/src/distPlus/symbolic/SymbolicDist.re b/src/distPlus/symbolic/SymbolicDist.re index e476e974..ada4e2c0 100644 --- a/src/distPlus/symbolic/SymbolicDist.re +++ b/src/distPlus/symbolic/SymbolicDist.re @@ -100,7 +100,7 @@ module Normal = { let from90PercentCI = (low, high) => { let mean = E.A.Floats.mean([|low, high|]); - let stdev = (high -. low) /. 1.645; + let stdev = (high -. low) /. (2. *. 1.644854); `Normal({mean, stdev}); }; let inv = (p, t: t) => Jstat.normal##inv(p, t.mean, t.stdev);