data

Bare (unquoted) variable name, or a character vector with the variable name.

Bare (unquoted) name of the cross-classifying variable, where
<code>x</code> is grouped into the categories represented by <code>grp</code>,
or a character vector with the variable name.

Indicates how the null distribution of the test statistic should be computed.
May be one of <code>"exact"</code>, <code>"approximate"</code> or <code>"asymptotic"</code>
(default). See <code><a rd-options="coin" href="/link/wilcox_test?package=sjstats&version=0.17.5&to=coin" data-mini-rdoc="coin::wilcox_test">wilcox_test</a></code> for details.

distribution

Character vector, indicating whether the results should be printed
to console (<code>out = "txt"</code>) or as HTML-table in the viewer-pane
(<code>out = "viewer"</code>) or browser (<code>out = "browser"</code>), of if the
results should be plotted (<code>out = "plot"</code>, only applies to certain
functions). May be abbreviated.

Character vector, indicating the charset encoding used
for variable and value labels. Default is <code>"UTF-8"</code>. Only used
when <code>out</code> is not <code>"txt"</code>.

encoding

Destination file, if the output should be saved as file.
Only used when <code>out</code> is not <code>"txt"</code>.

file

This function performs a Mann-Whitney-U-Test (or Wilcoxon rank sum test,
 see <code><a rd-options="stats" href="/link/wilcox.test?package=sjstats&version=0.17.5&to=stats" data-mini-rdoc="stats::wilcox.test">wilcox.test</a></code> and <code><a rd-options="coin" href="/link/wilcox_test?package=sjstats&version=0.17.5&to=coin" data-mini-rdoc="coin::wilcox_test">wilcox_test</a></code>)
 for <code>x</code>, for each group indicated by <code>grp</code>. If <code>grp</code>
 has more than two categories, a comparison between each combination of
 two groups is performed. 
 The function reports U, p and Z-values as well as effect size r
 and group-rank-means.

Collection of convenient functions for common statistical computations,
which are not directly provided by R's base or stats packages.
This package aims at providing, first, shortcuts for statistical
measures, which otherwise could only be calculated with additional
effort (like standard errors or root mean squared errors). Second,
these shortcut functions are generic (if appropriate), and can be
applied not only to vectors, but also to other objects as well
(e.g., the Coefficient of Variation can be computed for vectors,
linear models, or linear mixed models; the r2()-function returns
the r-squared value for 'lm', 'glm', 'merMod' and other model objects).
The focus of most functions lies on summary statistics or fit
measures for regression models, including generalized linear
models, mixed effects models and Bayesian models. However, some
of the functions also deal with other statistical measures,
like Cronbach's Alpha, Cramer's V, Phi etc.

Daniel Lüdecke

sjstats

Collection of Convenient Functions for Common Statistical
Computations

Daniel L<c3><bc>decke

mwu function

Indicates how the null distribution of the test statistic should be computed.
May be one of <code>"exact"</code>, <code>"approximate"</code> or <code>"asymptotic"</code>
(default). See <code><a rd-options='coin' href='wilcox_test'>wilcox_test</a></code> for details.

This function performs a Mann-Whitney-U-Test (or Wilcoxon rank sum test,
 see <code><a rd-options='stats' href='wilcox.test'>wilcox.test</a></code> and <code><a rd-options='coin' href='wilcox_test'>wilcox_test</a></code>)
 for <code>x</code>, for each group indicated by <code>grp</code>. If <code>grp</code>
 has more than two categories, a comparison between each combination of
 two groups is performed. 
 The function reports U, p and Z-values as well as effect size r
 and group-rank-means.

mwu: Mann-Whitney-U-Test

Description

Usage

Arguments

Value

Examples