hello, 
I would like to obtain a coefficient correlation between residuals and their expected value. in order to do that I need to run a z.test but non of the command available do not work, Im using z.score(x) or scores(x, type=z) commands . my R version is R 2.8.1 GUI 1.27 Tiger build 32-bit (5301) for Macintosh.
Thank you 
Avideh



      
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