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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 Origin Ver. and Service Release (Select Help-->About Origin): 10.1.0.178 (Academic) Operating System: Windows When using the "Compare Datasets" function in OriginPro, to compare how two datasets fit to the same model differ, do I need to test for any assumptions to be able to use this test? There are no instructions for these requirements on the webpage but it says that this function uses an F-test which usually only applies to normally distributed data. So: 1. Does data need to be normally distributed to use "Compare Datasets" 2. If yes, is there a non parametric alternative? Thanks!   Check here to subscribe to this topic.