We prefer software that gives the
exact P-value for the Wilcoxon test rather than the Normal
approximation.
Neither
Excel nor the TI-83 calculator
has menu entries for rank
tests.
Minitab
offers only the Normal approximation.
Here
is output from CrunchIt! for results
of three tests that could be used
to compare yields for the two groups
of corn plots.
Using
technology
