Hi, can you help? I am really struggling to find the answer to the following question. I have conducted a standard multiple regression using SPSS. The dependent variable is CE, and the independent variables are Ibelieve and Tbelieve. Because the independent variables are highly correlated I have examined the squared semi-partial correlations. I understand that the Ibelieve squared semi partial correlation accounts for a significant proportion of the variance in CE t= 2.689, whereas the tbelieve does not t = .556. However, I want to see if the squared semi-partial correlations are significantly different TO EACH OTHER (Ibelieve .168, Tbelieve .035 N= 220). How do I do this? I assume that I will need to do this "by hand" with an equation? Also, do I have to take into account that the squared semi-partial correlations are correlated in terms of the dependent variable? Thanks very much. Nichola -- http://www.shes.bangor.ac.uk/home.html ------------ Dr Nichola Callow (C.Psychol.) School of Sport, Health, and Exercise Science University of Wales, Bangor George Building Holyhead Road Bangor Gwynedd LL57 2PX Tel: 44 (0) 1248 388243 Fax: 44 (0) 1248 371053 E-Mail: n.callow at bangor.ac.uk
>>>>> "N" == N Callow <pes603 at bangor.ac.uk> >>>>> on Fri, 06 Aug 2004 11:48:00 +0100 writes:N> Hi, can you help? I am really struggling to find the N> answer to the following question. N> I have conducted a standard multiple regression using SPSS. so why do you ask here? R-help is for questions/problems/remarks about (or at least strongly related to) R. N> <..............> ..................... N> PLEASE do read the posting guide! N> http://www.R-project.org/posting-guide.html Indeed, please do!
Please, this is a mailing list about R, not SPSS. And what exact is `semi-partial correlation'? Andy> From: N.Callow > > Hi, can you help? I am really struggling to find the answer to the > following question. > > I have conducted a standard multiple regression using SPSS. > The dependent > variable is CE, and the independent variables are Ibelieve > and Tbelieve. > Because the independent variables are highly correlated I > have examined the > squared semi-partial correlations. I > understand that the Ibelieve squared semi partial correlation > accounts for > a significant proportion of the variance in CE t= 2.689, whereas the > tbelieve does not t = .556. However, I want to see if the squared > semi-partial correlations are significantly different TO EACH OTHER > (Ibelieve .168, Tbelieve .035 N= 220). How do I do this? I > assume that I > will need to do this "by hand" with an equation? Also, do I > have to take > into account that the squared semi-partial correlations are > correlated in > terms of the dependent variable? > Thanks very much. > Nichola > > > -- > http://www.shes.bangor.ac.uk/home.html > ------------ > Dr Nichola Callow (C.Psychol.) > School of Sport, Health, and Exercise Science > University of Wales, Bangor > George Building > Holyhead Road > Bangor > Gwynedd LL57 2PX > Tel: 44 (0) 1248 388243 > Fax: 44 (0) 1248 371053 > E-Mail: n.callow at bangor.ac.uk > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > >