#  File src/library/stats/R/sd.R
#  Part of the R package, https://www.R-project.org
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#  This program is distributed in the hope that it will be useful,
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sd <- function(x, na.rm = FALSE)
    sqrt(var(if(is.vector(x) || is.factor(x)) x else as.double(x), na.rm = na.rm))

