hi, ım studying moderated effects of percieved social support and justice world belief on relationship between stress coping strategies and depression level. ı haver never run this analysis before soi ı want to check my steps whether correct or not.
first ı run regression in step 1 centered independent variables and centered moderators in step2 two way interactions instep 3 three way interactions as results ı found significiant two way and three way interactions. "It ıs important after this" for example two way interactions; ı run 2 slopes that fit in with Winnifred's suggestion (http://www.docstoc.com/docs/21151269/Moderated-Multiple-Regression-v5 p.6) my criteria for significence was the centered indipendent vairable (that has significant interaction level) in Block 2--------- is this way is correct????? second to plot this slope ı used Dawson' s 2 way unstandardised excel spreadsheet (http://www.jeremydawson.co.uk/slopes.htm). In spreadsheet it is required to enter unstandardised regression coefficients of IV, moderator and interaction. ın which block the coefficients are true for entering IV and moderator co efficients????? ın 1 block (that include main effects) or in 2 block (that include interactions)????? one more question: In three way spreadshhet it is necessary to enter variance of IV*Moderator coefficient. ın matrıx which covariance block is correct to enter this value? should ı look at second covariance block or third covariance block. like this,for value of Covariance of IV*Mod1, IV*Mod2 coefficients which covariance block must be taken as correct??? thaks so much Note: excuse me for my English -- View this message in context: http://r.789695.n4.nabble.com/multiple-moderated-regression-steps-tp3637807p3637807.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.
