[R] MANOVA and Extra Sums-of-Squares Tests
I would like to conduct an extra sum-of -squares test that compares a full MANOVA model (with all 1st order interactions) to a reduced model (no interactions) to determine if I can drop all interactions at the same time. This is analagous to an extra sum-of-squares F-test in ANOVA, but instead using MANOVA. Is there a command in R that does this? If not, is there a command that calculates residual sum-of-squares and cross-product matrices? Thanks. -- View this message in context: http://r.789695.n4.nabble.com/MANOVA-and-Extra-Sums-of-Squares-Tests-tp4470077p4470077.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] MANOVA and Extra Sums-of-Squares Tests
Hi John, Thanks for your response. The anova funtion will not work in my case, because I have multiple response variables. In other words, I would like to conduct an extra sums-of-squares and cross-products test between the following models: FULL.MODEL: (Y1, Y2, Y3, Y4, Y5) as a function of X1 + X2 + X3 + X4 + X1*X2 +X1*X3 + X1*X4 REDUCED.MODEL: (Y1, Y2, Y3, Y4, Y5) as a function of X1 + X2 + X3 + X4 So, I suppose that I would need to calculate the residual sum-of-squares and cross-product matrices for each of these models as a start. Any ideas how I would go about this in R? Thanks again, Chris -- View this message in context: http://r.789695.n4.nabble.com/MANOVA-and-Extra-Sums-of-Squares-Tests-tp4470077p4470459.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] MANOVA and Extra Sums-of-Squares Tests
Hi John, Thanks again. That looks like an easy and convenient approach. Regards, Chris -- View this message in context: http://r.789695.n4.nabble.com/MANOVA-and-Extra-Sums-of-Squares-Tests-tp4470077p4472265.html Sent from the R help mailing list archive at Nabble.com. __ 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.
