Description Details Author(s) See Also
This package facilitates easy analysis of factorial experiments, including purely within-Ss designs (a.k.a. “repeated measures”), purely between-Ss designs, and mixed within-and-between-Ss designs. The functions in this package aim to provide simple, intuitive and consistent specification of data analysis and visualization. Visualization functions also include design visualization for pre-analysis data auditing, and correlation matrix visualization. Finally, this package includes functions for non-parametric analysis, including permutation tests and bootstrap resampling. The bootstrap function obtains predictions either by cell means or by more advanced/powerful mixed effects models, yielding predictions and confidence intervals that may be easily visualized at any level of the experiment's design.
Package: | ez |
Type: | Package |
Version: | 4.4-0 |
Date: | 2016-11-01 |
License: | GPL-3 |
LazyLoad: | yes |
This package contains several useful functions:
ezANOVA
Provides simple interface to ANOVA, including assumption checks.
ezBoot
Computes bootstrap resampled cell means or lmer predictions
ezCor
Function to plot a correlation matrix with scatterplots, linear fits, and univariate density plots
ezDesign
Function to plot a visual representation of the balance of data given a specified experimental design. Useful for diagnosing missing data issues.
ezMixed
Provides assessment of fixed effects in a mixed effects modelling context.
ezPerm
Provides simple interface to the Permutation test.
ezPlot
Uses the ggplot2
graphing package to generate plots for any given user-requested effect, by default producing error bars that facilitate visual post-hoc multiple comparisons.
ezPlot2
When supplied the results from a call to ezPredict
or ezBoot
, plots predictions with confidence intervals.
ezPrecis
Provides a summary of a given data frame.
ezPredict
Computes predicted values from the fixed effects of a mixed effects model.
ezResample
Resamples data, useful when bootstrapping.
ezStats
Provides between-Ss descriptive statistics for any given user-requested effect.
This package also contains two data sets:
ANT
Simulated data from the Attention Network Test
ANT2
Messy version of the ANT data set
Michael A. Lawrence mike.lwrnc@gmail.com
Visit the ez
development site at http://github.com/mike-lawrence/ez
for the bug/issue tracker and the link to the mailing list.
ANT
, ANT2
, ezANOVA
, ezBoot
, ezCor
, ezDesign
, ezMixed
, ezPerm
, ezPlot
, ezPlot2
, ezPrecis
, ezPredict
, ezResample
, ezStats
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