Dear Zoltan, Many thanks. My student is using the negative binomial. So a Gaussian distribution is recommended for biomass data?
Yours, Jon. From: R-sig-ecology <r-sig-ecology-boun...@r-project.org> on behalf of Zoltán Botta-Dukát <botta-dukat.zol...@ecolres.hu> Date: Friday, November 8, 2024 at 2:29 AM To: r-sig-ecology@r-project.org <r-sig-ecology@r-project.org> Subject: [EXTERNAL] Re: [R-sig-eco] Units and mvabund [You don't often get email from botta-dukat.zol...@ecolres.hu. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] Dear Jon, Which distribution was used? Normal (Gaussian) distribution should be resistant to change units. Poisson and negative binomial are sensitive. I'm not sure about tweedie. Best wishes, Zoltan 2024. 11. 07. 22:09 keltezéssel, Jon Benstead írta: > Dear list: My graduate student and I have noticed that our mvabund results > are sensitive to the units of our data (i.e. grams or milligrams � in other > words, a thousandfold difference). Is this because of inflation of > differences between zeros and non-zeros? Any insight would be greatly > appreciated. Yours, Jon. > > [[alternative HTML version deleted]] > > > _______________________________________________ > R-sig-ecology mailing list > R-sig-ecology@r-project.org > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstat.ethz.ch%2Fmailman%2Flistinfo%2Fr-sig-ecology&data=05%7C02%7Cjbenstead%40ua.edu%7C6617c6ba05d84bc15d3008dcffcf6cdf%7C2a00728ef0d040b4a4e8ce433f3fbca7%7C0%7C0%7C638666513569007467%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=UOclekkKa%2Br8nLlFbAw7ZHPLWA3UnZNoioN7csoxzeI%3D&reserved=0<https://stat.ethz.ch/mailman/listinfo/r-sig-ecology> -- Botta-Dukát Zoltán Zoltán Botta-Dukát tudományos tanácsadó scientific advisor Ökológiai Kutatóközpont Centre for Ecological Research Ökológiai és Botanikai Intézet Institute of Ecology and Botany _______________________________________________ R-sig-ecology mailing list R-sig-ecology@r-project.org https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstat.ethz.ch%2Fmailman%2Flistinfo%2Fr-sig-ecology&data=05%7C02%7Cjbenstead%40ua.edu%7C6617c6ba05d84bc15d3008dcffcf6cdf%7C2a00728ef0d040b4a4e8ce433f3fbca7%7C0%7C0%7C638666513569029594%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Sk%2F67lr5FHfQd7MOeLLosE4NHLqfTgxSnMrluLcISXQ%3D&reserved=0<https://stat.ethz.ch/mailman/listinfo/r-sig-ecology> [[alternative HTML version deleted]] _______________________________________________ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
