| variance {ifultools} | R Documentation |
A hybrid of S-PLUS and R definitions of the variance function.
variance(x, na.rm=TRUE, unbiased=FALSE)
x |
a numeric vector, matrix, or data.frame. |
na.rm |
a logical flag. If TRUE, NA values are removed prior to computation. Default: TRUE. |
unbiased |
a logical flag. If TRUE, the unbiased sample variance is returned. Default: FALSE. |
Allows the user to calculate the biased/unbiased variance of the input and provides the option to eliminate NA values as well.
the sample variance of the input.
var.
set.seed(100) x <- rnorm(100) variance(x, unbiased=TRUE) variance(x, unbiased=FALSE) variance(c(x,rep(NA,30)), na.rm=TRUE)