quantified.uncertainty/squiggle
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix: typo

Browse Source
This commit is contained in:
NunoSempere 2022-04-15 12:54:04 -04:00
parent 1677d63375
commit 8743b235d6
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
packages/squiggle-lang/src/rescript/Distributions/SymbolicDist/SymbolicDist.res
View File

@ -160,14 +160,14 @@ module Lognormal = {
let multiply = (l1, l2) => {
// https://wikiless.org/wiki/Log-normal_distribution?lang=en#Multiplication_and_division_of_independent,_log-normal_random_variables
let mu = l1.mu +. l2.mu
let sigma = Js.Math.sqrt(l1.sigma ** 2. +. l2.sigma ** 2.) // m
let sigma = Js.Math.sqrt(l1.sigma ** 2. +. l2.sigma ** 2.)
#Lognormal({mu: mu, sigma: sigma})
}
let divide = (l1, l2) => {
let mu = l1.mu -. l2.mu
// We believe the ratiands will have covariance zero.
// See here https://stats.stackexchange.com/questions/21735/what-are-the-mean-and-variance-of-the-ratio-of-two-lognormal-variables for details
let sigma = Js.Math.sqrt(l1.sigma ** 2. +. l2.sigma ** 2.) // m
let sigma = Js.Math.sqrt(l1.sigma ** 2. +. l2.sigma ** 2.)
#Lognormal({mu: mu, sigma: sigma})
}
let operate = (operation: Operation.Algebraic.t, n1: t, n2: t) =>