> > There is a standard test for a Poisson distribution , Fisher's Dispersion > test ,which no longer seems to be widely known. > My reference to it (Cochran 1954 , Biometrics !0,417) is from Volume 1 of > my old copy of Kendall and Stuart' s "Advanced Theory of Statistics, volume > 1 .
Directly ordered this from the library... > > This can be referred to ChiSquare tables on 199 df . > I do not have such tables but approximating with a Normal with mean 199 > and variance 398 leads to a Z-score of 1.861 . This is likely to be the most > powerful test of the hypothesis as there is no loss of information from > grouping. > I'm using R to compute the values, so getting the chisq quantiles is easy (see www.r-project.org, fine open-source software, well, probably known here ;-)) Thanks to you and the others for all the helpful comments! Daniel . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
