Hello Again,
Doesn't anyone know where the problem might be? I could not get any more information from the help page. Many thanks Best Sergii [R] question about multinom function (nnet) * This message: [ Message body <http://tolstoy.newcastle.edu.au/R/e9/help/10/03/9009.html#start> ] [ More options <http://tolstoy.newcastle.edu.au/R/e9/help/10/03/9009.html#options2> ] * Related messages: [ Next message <http://tolstoy.newcastle.edu.au/R/e9/help/10/03/9010.html> ] [ Previous message <http://tolstoy.newcastle.edu.au/R/e9/help/10/03/9008.html> ] From: Sergii Ivakhno <Sergii.Ivakhno_at_cancer.org.uk <mailto:Sergii.Ivakhno_at_cancer.org.uk?Subject=Re:%20[R]%20question%20a bout%20multinom%20function%20%28nnet%29> > Date: Wed, 17 Mar 2010 14:59:10 +0000 Hello Again, Dear All. I have the following table that I want to analyze using multinom function freq segments sample 4271 Seg1 tumour 4311 Seg2 tumour 3515 Seg1 normal 3561 Seg2 normal I want to compare model with both factors to the one where only sample is present. model1=multinom(freq~segments+sample,data=table) model2=multinom(freq~ sample,data=table) anova(model2,model1) Likelihood ratio tests of Multinomial Models Response: freq Model Resid. df Resid. Dev Test Df LR stat. Pr(Chi) 1 sample 6 5.5452609828 2 segments + sample 3 0.0001600513 1 vs 2 3 5.545101 0.1359658 What I do not understand is where df of 6 and 3 come from? Shouldn't they be 2 and 1? Many thanks for your help in advance Sincerely Sergii ________________________________ Sergii Ivakhno PhD student Computational Biology Group Cancer Research UK Cambridge Research Institute Li Ka Shing Centre Robinson Way Cambridge CB2 0RE England +44 (0)1223 404293 (O) +44 (0)1223 404128 (F) http://www.compbio.group.cam.ac.uk <http://www.compbio.group.cam.ac.uk/> <http://www.compbio.group.cam.ac.uk/ <http://www.compbio.group.cam.ac.uk/> > / This communication is from Cancer Research UK. Our website is at www.cancerresearchuk.org. We are a charity registered under number 1089464 and a company limited by guarantee registered in England & Wales under number 4325234. Our registered address is 61 Lincoln's Inn Fields, London WC2A 3PX. Our central telephone number is 020 7242 0200. This communication and any attachments contain information which is confidential and may also be privileged. It is for the exclusive use of the intended recipient(s). If you are not the intended recipient(s) please note that any form of disclosure, distribution, copying or use of this communication or the information in it or in any attachments is strictly prohibited and may be unlawful. If you have received this communication in error, please notify the sender and delete the email and destroy any copies of it. E-mail communications cannot be guaranteed to be secure or error free, as information could be intercepted, corrupted, amended, lost, destroyed, arrive late or incomplete, or contain viruses. We do not accept liability for any such matters or their consequences. Anyone who communicates with us by e-mail is taken to accept the risks in doing so. [[alternative HTML version deleted]] ---------------------------------------------- Sergii Ivakhno PhD student Computational Biology Group Cancer Research UK Cambridge Research Institute Li Ka Shing Centre Robinson Way Cambridge CB2 0RE England +44 (0)1223 404293 (O) +44 (0)1223 404128 (F) http://www.compbio.group.cam.ac.uk <http://www.compbio.group.cam.ac.uk/> / This communication is from Cancer Research UK. Our website is at www.cancerresearchuk.org. We are a charity registered under number 1089464 and a company limited by guarantee registered in England & Wales under number 4325234. Our registered address is 61 Lincoln's Inn Fields, London WC2A 3PX. Our central telephone number is 020 7242 0200. This communication and any attachments contain information which is confidential and may also be privileged. It is for the exclusive use of the intended recipient(s). If you are not the intended recipient(s) please note that any form of disclosure, distribution, copying or use of this communication or the information in it or in any attachments is strictly prohibited and may be unlawful. If you have received this communication in error, please notify the sender and delete the email and destroy any copies of it. E-mail communications cannot be guaranteed to be secure or error free, as information could be intercepted, corrupted, amended, lost, destroyed, arrive late or incomplete, or contain viruses. We do not accept liability for any such matters or their consequences. Anyone who communicates with us by e-mail is taken to accept the risks in doing so. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
