topic Re: How to know P-Value from Fitted Normal 2 Mixture Distribution in Discussions

How to know P-Value from Fitted Normal 2 Mixture Distribution

SengYew — Tue, 06 Aug 2024 13:30:55 GMT

Dear Sir,

How to know P-Value from Fitted Normal 2 Mixture Distribution. Since there is no Goodness of fit. where I can know the P-value?

Re: How to know P-Value from Fitted Normal 2 Mixture Distribution

Byron_JMP — Tue, 06 Aug 2024 19:10:48 GMT

I'm not convinced that you have a normal 2 mixture distribution, maybe 3 mixture? But probably not. I'd check for rounding in your measurements to see if thing gets rounded to 0.1, 0.2, 0,25, and 0.35. Those values seem to occur more often.

Try using the SHASH distribution model. The goodness of fit is available for that model

Distribution models with more parameters can account for asymmetry and weird tails better than simpler models.

Mixture distributions don't have goodness of fit, because which fit would you be evaluating?

Re: How to know P-Value from Fitted Normal 2 Mixture Distribution

SengYew — Wed, 07 Aug 2024 07:20:12 GMT

Hi Byron,

When I select " Fit All ", system auto select " Fitted Normal 2 Mixture distribution " for me. SHASH distribution is second after Normal 2 Mixture distribution.....

SHASH distribution is work for me.. Thank