afex-package {afex}R Documentation

The afex Package

Description

Analysis of Factorial Experiments.

Details

Package: afex
Type: Package
Version: 0.16-1
Date: 2016-04-04
Depends: R (>= 3.1.0), lme4 (>= 1.1-8), reshape2, lsmeans (>= 2.17)
Encoding: UTF-8
License: GPL (>=3)
URL: https://github.com/singmann/afex

Provides convenience functions for analyzing factorial experiments using ANOVA or mixed models. aov_ez(), aov_car(), and aov_4() allow specification of between, within (i.e., repeated-measures), or mixed between-within (i.e., split-plot) ANOVAs for data in long format (i.e., one observation per row), potentially aggregating multiple observations per individual and cell of the design. mixed() fits mixed models using lme4::lmer() and computes p-values for all fixed effects using either Kenward-Roger approximation for degrees of freedom (LMM only), parametric bootstrap (LMMs and GLMMs), or likelihood ratio tests (LMMs and GLMMs). afex uses type 3 sums of squares as default (imitating commercial statistical software).

Author(s)

Henrik Singmann, Ben Bolker, Jake Westfall, Frederik Aust, with contributions from Søren Højsgaard, John Fox, Michael A. Lawrence, Ulf Mertens


[Package afex version 0.16-1 Index]