Bar charts for categorical data with statistical details included in the plot as a subtitle.

ggbarstats(
data,
x,
y,
counts = NULL,
type = "parametric",
paired = FALSE,
results.subtitle = TRUE,
label = "percentage",
label.args = list(alpha = 1, fill = "white"),
k = 2L,
proportion.test = TRUE,
perc.k = 0,
bf.message = TRUE,
ratio = NULL,
conf.level = 0.95,
sampling.plan = "indepMulti",
fixed.margin = "rows",
prior.concentration = 1,
title = NULL,
subtitle = NULL,
caption = NULL,
legend.title = NULL,
xlab = NULL,
ylab = NULL,
ggtheme = ggplot2::theme_bw(),
ggstatsplot.layer = TRUE,
package = "RColorBrewer",
palette = "Dark2",
ggplot.component = NULL,
output = "plot",
...
)

## Arguments

data A dataframe (or a tibble) from which variables specified are to be taken. Other data types (e.g., matrix,table, array, etc.) will not be accepted. The variable to use as the rows in the contingency table. Please note that if there are empty factor levels in your variable, they will be dropped. The variable to use as the columns in the contingency table. Please note that if there are empty factor levels in your variable, they will be dropped. Default is NULL. If NULL, one-sample proportion test (a goodness of fit test) will be run for the x variable. Otherwise an appropriate association test will be run. This argument can not be NULL for ggbarstats function. A string naming a variable in data containing counts, or NULL if each row represents a single observation. A character specifying the type of statistical approach: "parametric" "nonparametric" "robust" "bayes" This argument also accepts the following abbreviations: "p" (for parametric), "np" (for nonparametric), "r" (for robust), "bf" (for Bayes Factor or Bayesian). Logical indicating whether data came from a within-subjects or repeated measures design study (Default: FALSE). If TRUE, McNemar's test expression will be returned. If FALSE, Pearson's chi-square test will be returned. Decides whether the results of statistical tests are to be displayed as a subtitle (Default: TRUE). If set to FALSE, only the plot will be returned. Character decides what information needs to be displayed on the label in each pie slice. Possible options are "percentage" (default), "counts", "both". Additional aesthetic arguments that will be passed to geom_label. Number of digits after decimal point (should be an integer) (Default: k = 2L). Decides whether proportion test for x variable is to be carried out for each level of y (Default: TRUE). In ggbarstats, only p-values from this test will be displayed. Numeric that decides number of decimal places for percentage labels (Default: 0). Logical that decides whether to display Bayes Factor in favor of the null hypothesis. This argument is relevant only for parametric test (Default: TRUE). A vector of proportions: the expected proportions for the proportion test (should sum to 1). Default is NULL, which means the null is equal theoretical proportions across the levels of the nominal variable. This means if there are two levels this will be ratio = c(0.5,0.5) or if there are four levels this will be ratio = c(0.25,0.25,0.25,0.25), etc. Scalar between 0 and 1. If unspecified, the defaults return 95% confidence/credible intervals (0.95). Character describing the sampling plan. Possible options are "indepMulti" (independent multinomial; default), "poisson", "jointMulti" (joint multinomial), "hypergeom" (hypergeometric). For more, see ?BayesFactor::contingencyTableBF(). For the independent multinomial sampling plan, which margin is fixed ("rows" or "cols"). Defaults to "rows". Specifies the prior concentration parameter, set to 1 by default. It indexes the expected deviation from the null hypothesis under the alternative, and corresponds to Gunel and Dickey's (1974) "a" parameter. The text for the plot title. The text for the plot subtitle. Will work only if results.subtitle = FALSE. The text for the plot caption. Title text for the legend. Custom text for the x axis label (Default: NULL, which will cause the x axis label to be the x variable). Custom text for the y axis label (Default: NULL). A function, ggplot2 theme name. Default value is ggplot2::theme_bw(). Any of the ggplot2 themes, or themes from extension packages are allowed (e.g., ggthemes::theme_fivethirtyeight(), hrbrthemes::theme_ipsum_ps(), etc.). Logical that decides whether theme_ggstatsplot theme elements are to be displayed along with the selected ggtheme (Default: TRUE). theme_ggstatsplot is an opinionated theme layer that override some aspects of the selected ggtheme. Name of the package from which the given palette is to be extracted. The available palettes and packages can be checked by running View(paletteer::palettes_d_names). Name of the package from which the given palette is to be extracted. The available palettes and packages can be checked by running View(paletteer::palettes_d_names). A ggplot component to be added to the plot prepared by ggstatsplot. This argument is primarily helpful for grouped_ variants of all primary functions. Default is NULL. The argument should be entered as a ggplot2 function or a list of ggplot2 functions. Character that describes what is to be returned: can be "plot" (default) or "subtitle" or "caption". Setting this to "subtitle" will return the expression containing statistical results. If you have set results.subtitle = FALSE, then this will return a NULL. Setting this to "caption" will return the expression containing details about Bayes Factor analysis, but valid only when type = "parametric" and bf.message = TRUE, otherwise this will return a NULL. Currently ignored.

grouped_ggbarstats, ggpiestats, grouped_ggpiestats

## Examples

# \donttest{
# for reproducibility
set.seed(123)

# association test (or contingency table analysis)
ggstatsplot::ggbarstats(
data = mtcars,
x = vs,
y = cyl
)
#> Warning: Chi-squared approximation may be incorrect
#> Warning: Could not estimate a good default ROPE range. Using 'c(-0.1, 0.1)'.

# }