% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/utils.R
\name{safe_sd}
\alias{safe_sd}
\title{Safe Standard Deviation}
\usage{
safe_sd(x)
}
\arguments{
\item{x}{Numeric vector.}
}
\value{
Standard deviation or NA if vector has fewer than 2 elements.
}
\description{
Calculate standard deviation with handling for single-value vectors.
}
\keyword{internal}
