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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Forum: Origin Forum Subject: Message: * HTML is OFF * Forum Code is ON Smilies OriginPro 2018(64-bit) Operating System: Windows 10 I have a question regarding the Fit Comparison of Models - the Bayesian and Akaike's Information Criterion Test. I have a data set from which I'm deconvolving two or three lognormal distributions. When I do the deconvolution and then compare the two models, I get the following: [img]https://my.originlab.com/ftp/forum_and_kbase/Images/Comparison1.png[/img] Under the "Number of Parameters", why does it say 2 and 3 for the two compared models? Shouldn't it be 4 and 6 (2 mu's and sigma's, or 3 mu's and sigmas)? I'm a bit confused how does model comparison work with deconvolutions. The two deconvolutions are shown below: [img]https://my.originlab.com/ftp/forum_and_kbase/Images/TwoDeconvolutions.png[/img] If anyone can explain how origin is doing this, I would be very grateful.   Check here to subscribe to this topic.