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2011 Mar 20
4
predicting values from multiple regression
...+ I(distPr^2))
Now I tried to predict the values for calP from this model using the
following function:
xv<-seq(0,89,by=1)
yv<-predict(model9,list(distPr=xv,st=xv,nsP=xv))
The predicted values are however strange. Now I do not know weather
just the model does not fit the data (actually all coefficiets are
significant and the plot(model) shows a good shape) or wether I did
something wrong with my prediction command. Does anyone have an
idea???
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Thanks a lot, Anna