hi, folks, how have you gone about reporting a p-value from a test when the returned value from a test (in this case a rank-sum test) is numerically equal to 0 according to the machine?
the next lowest value greater than zero that is distinct from zero on the machine is likely algorithm-dependent (the algorithm of the test itself), but without knowing the explicit steps of the algorithm implementation, it is difficult to provide any non-zero value. i initially thought to look at .mach...@double.xmin, but i'm not comfortable with reporting p < .mach...@double.xmin, since without knowing the specifics of the implementation, this may not be true! to be clear, if i have data x, and i run the following line, the returned value is TRUE. wilcox.test(x)$p.value == 0 thanks for any help on this! ______________________________________________ R-help@r-project.org mailing list 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.
