[MATH-1373] In LogNormalDistribution.java, it appears shape & scale are reversed/mis-labelled.

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 3.6.1
• Fix Version/s: 4.0
• Assignee: Unassigned
• Reporter: Karl D. Gierach
• Created: 02/Jun/16 00:27
• Updated: 02/Dec/19 08:08
• Resolved: 02/Dec/19 08:08

Description

When I compute the logshape and log scale based on the formulas on wikipedia's lognormal distribution page that use empirical mean and variance, I found that the getNumericalMean() method was not returning the empirical mean.

However, upon just trying to reverse the shape and scale parameters in the constructor proved to fix the problem, and the object then returns the correct empirical mean.

Issue Links

• is related to: RNG-96 AhrensDieterMarsagliaTsangGammaSampler incorrectly names parameters