Package

r-xnomial

Description

Exact Goodness-of-Fit Test for Multinomial Data with Fixed
Probabilities. Tests whether a set of counts fit a given expected ratio.
For example, a genetic cross might be expected to produce four types in
the relative frequencies of 9:3:3:1. To see whether a set of observed
counts fits this expectation, one can examine all possible outcomes with
xmulti() or a random sample of them with xmonte() and find the
probability of an observation deviating from the expectation by at least
as much as the observed. As a measure of deviation from the expected,
one can use the log-likelihood ratio, the multinomial probability, or
the classic chi-square statistic. A histogram of the test statistic can
also be plotted and compared with the asymptotic curve.

Note