% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/pmm3_utils.R
\name{test_symmetry}
\alias{test_symmetry}
\title{Test whether residuals are sufficiently symmetric for PMM3}
\usage{
test_symmetry(x, threshold = 0.3)
}
\arguments{
\item{x}{numeric vector of residuals}

\item{threshold}{numeric threshold for |gamma3| (default 0.3)}
}
\value{
A list with components:
\item{gamma3}{Sample skewness coefficient}
\item{is_symmetric}{Logical: TRUE if |gamma3| <= threshold}
\item{message}{Human-readable verdict}
}
\description{
Computes the skewness coefficient gamma3 and checks whether its absolute
value falls below a given threshold. This helps decide between PMM2
(asymmetric) and PMM3 (symmetric platykurtic) estimation.
}
