Methods which implement and run a group test statistic for
a class inheriting from groupStats class. See Details section
for a description of each method.
GOFisherTest: implements Fischer's exact test (based on contingency
table) for groupStats objects dealing with "counts".
GOKSTest: implements the Kolmogorov-Smirnov test for groupStats
objects dealing with gene "scores". This test uses the ks.test
function and does not implement the running-sum-statistic test based
on permutations.
GOtTest: implements the t-test for groupStats objects dealing
with gene "scores". It should be used when the gene scores are
t-statistics or any other score following a normal distribution.
GOglobalTest: implement Goeman's globaltest.
Value
All these methods return the p-value computed by the respective test statistic.