TITLE(sd @@ Standard Deviation)
USAGE(
sd(x,  na.rm=FALSE)
)
ALIAS(sd)
DESCRIPTION(
This function computes the standard deviation of the values in
LANG(x).
If LANG(na.rm) is LANG(TRUE) then missing values are removed
before computation proceeds.
)
SEEALSO(
LANG(LINK(var)) 
)
EXAMPLES(
sd(1:2) ^ 2
)
