Descriptive shape functions

Computes skewness and kurtosis measures with optional small-sample adjustments and plain-language interpretations.

Usage

skew(
  x,
  method = c("moment", "adjusted"),
  na_rm = FALSE,
  digits = 4,
  quiet = FALSE
)

kurt(
  x,
  method = c("moment", "adjusted"),
  excess = FALSE,
  na_rm = FALSE,
  digits = 4,
  quiet = FALSE
)

Arguments

x

Numeric sample vector.

method

Estimator choice for the shape measure.

na_rm

Logical; if TRUE, remove missing values before computing the measure.

digits

Integer number of decimal places used only for printed output.

quiet

Logical; if TRUE, suppress printed output.

excess

Logical; for kurt(), whether to report excess kurtosis instead of Pearson kurtosis.

Details

These functions return classed result objects with unrounded stored values and optional printed summaries controlled by digits and quiet.

Functions

• skew(): Sample skewness measure and interpretation.

• kurt(): Sample kurtosis measure and interpretation.