search for: modnew

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2012 Sep 26
1
Interaction scatterplots in ggplot with multiple regression lines
I'm trying to treat a continuous variable as discrete for plotting multiple regression lines in a scatterplot as a function of the level on the moderating variable. In the example below, there is only one regression line plotted to the whole data. I would like a separate regression line for each discrete level of the moderator. The moderator is continuous, so I'd like to treat it as
2010 Nov 24
0
nonparametric covariance analysis
...de) For this model, I haven't normal distribution on residuals and they aren't homoscedastic. So I tried a boxcox transformation: residuo<-residuals(mod) lillie.test(residuo) leveneTest(residuo~F1,data=dds) leveneTest(residuo~F2,data=dds) leveneTest(residuo~F3,data=dds) boxcox(model) modnew<-lm((y^1.3-1)/1.3 ~ x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10 + x11 + x12 + x13 + x14 + x15 + x16 + x17 + x18 + F1+ F2+ F3, data = dds, weights = erro.y, na.action = na.exclude) But I still haven't success with Anova assumptions. My factor F1 is the one of interest, it is about...