desc_stats_by_group {kim}

Descriptive statistics by group

Description

Returns descriptive statistics by group

Usage

desc_stats_by_group(
  data = NULL,
  var_for_stats = NULL,
  grouping_vars = NULL,
  stats = "all",
  sigfigs = NULL,
  cols_to_round = NULL
)

Arguments

data

a data object (a data frame or a data.table)

var_for_stats

name of the variable for which descriptive statistics will be calculated

grouping_vars

name(s) of grouping variables

stats

statistics to calculate. If stats = "basic", group size, mean, standard deviation, median, minimum, and maximum will be calculated. If stats = "all", in addition to the aforementioned statistics, standard error, 95% confidence and prediction intervals, skewness, and kurtosis will also be calculated. The stats argument can also be a character vector with types of statistics to calculate. For example, entering stats = c("mean", "median") will calculate mean and median. By default, stats = "all"

sigfigs

number of significant digits to round to

cols_to_round

names of columns whose values will be rounded

Value

the output will be a data.table showing descriptive statistics of the variable for each of the groups formed by the grouping variables.

Examples

desc_stats_by_group(data = mtcars, var_for_stats = "mpg",
grouping_vars = c("vs", "am"))
desc_stats_by_group(data = mtcars, var_for_stats = "mpg",
grouping_vars = c("vs", "am"), sigfigs = 3)
desc_stats_by_group(data = mtcars, var_for_stats = "mpg",
grouping_vars = c("vs", "am"), stats = "basic", sigfigs = 2)
desc_stats_by_group(data = mtcars, var_for_stats = "mpg",
grouping_vars = c("vs", "am"), stats = "basic", sigfigs = 2,
cols_to_round = "all")
desc_stats_by_group(data = mtcars, var_for_stats = "mpg",
grouping_vars = c("vs", "am"), stats = c("mean", "median"), sigfigs = 2,
cols_to_round = "all")