RVAideMemoire (version 0.9-11)

G.test: G-test

Description

Perfom a G-test on a contingency table or a vector of counts.

Usage

G.test(x, p = rep(1/length(x), length(x)))

Arguments

x

a numeric vector or matrix (see Details).

p

theoretical proportions (optional).

Value

• statistic
  test statistics.
• parameter
  test degrees of freedom
• p.value
  p-value.
• method
  a character string indicating the type of test performed.
• data.name
  a character string giving the name(s) of the data.
• observed
  the observed counts.
• expected
  the expected counts under the null hypothesis.

Details

If x is matrix, it must be constructed like this: - 2 columns giving number of successes (left) and fails (right) - 1 row per population. The function works as chisq.test() : - if x is a vector and theoretical proportions are not given, equality of counts is tested - if x is a vector and theoretical proportions are given, equality of counts to theoretical counts (given by theoretical proportions) is tested - if x is a matrix, equality of proportion of successes between populations is tested.

See Also

chisq.test, G.multcomp, G.theo.multcomp, pairwise.G.test