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A hybrid of S-PLUS and R definitions of the variance function.
variance(x, na.rm=TRUE, unbiased=FALSE)the sample variance of the input.
a numeric vector, matrix, or data.frame.
a logical flag. If TRUE, NA values are removed prior to computation. Default: TRUE.
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.
var.
set.seed(100)
x <- rnorm(100)
variance(x, unbiased=TRUE)
variance(x, unbiased=FALSE)
variance(c(x,rep(NA,30)), na.rm=TRUE)
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