> On 30 Aug 2015, at 13:54 , paul brett <brettpau...@gmail.com> wrote: > > Fisher's Exact Test for Count Data with simulated p-value (based on 1e+07 > replicates) > > data: Trapz > p-value = 1e-07 > alternative hypothesis: two.sided > > > Dispite these chages, the changes equations is not giving me the results > for the calculations. The changes I have made seem to satisfy what is in > the details section on R, and I don't have the issue of workspace in R. > What I do to get the results of the fisher test? > Is there something simple that I am missing?
The theory? There is nothing more to Fisher's test than the calculation of the probability of obtaining a table as or less (im-)probable as the one observed. This is the p-value. You have done 10 million simulations and not found a single table that is less likely than the one observed. Hence, the p-value is 1/10 000 001 = ca. 1e-7, counting in the observed table. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
