sd {stats} | R Documentation |
This function computes the standard deviation of the values in
x
.
If na.rm
is TRUE
then missing values are removed before
computation proceeds.
If x
is a matrix or a data frame, a vector of the standard
deviation of the columns is returned.
sd(x, na.rm = FALSE)
x |
a numeric vector, matrix or data frame. |
na.rm |
logical. Should missing values be removed? |
var
for its square, and mad
, the most
robust alternative.
sd(1:2) ^ 2