Wrapper for CochranArmitageTest which is
a test for trend in binomial proportions across the levels of a
single variable
w.CochraneArmitageTrend.test(values, grouping, ...)the value of CochranArmitageTest
vector. The values to compare. Will be passed to
circular to be converted to circular
format
of the same length as values. treated as factor giving the group membership
additional parameters. are passed on to the
CochranArmitageTest
Dr. Andreas Leha