multinomial.multcomp function

Pairwise comparisons after an exact multinomial test

Performs pairwise comparisons after a global exact multinomial test. These comparisons are performed using exact binomial tests.

multinomial.multcomp(x, p.method = "fdr")

Arguments

• x: numeric vector (counts). Can also be a factor; in that case table(x) is used as counts.
• p.method: method for p-values correction. See help of p.adjust.

Details

Since chi-squared and G tests are approximate tests, exact tests are preferable when the number of individuals is small (200 is a reasonable minimum).

An exact multinomial test with two groups is strictly the same than an exact binomial test.

Returns

• method: name of the test.

• data.name: a character string giving the name(s) of the data.

• p.adjust.method: method for p-values correction.

• p.value: table of results.

Author(s)

Maxime HERVE maxime.herve@univ-rennes1.fr

See Also

multinomial.test, binom.test

Examples

counts <- c(5,15,23)
multinomial.test(counts)
multinomial.multcomp(counts)