| var_u {metrica} | R Documentation |
Uncorrected Variance (var_u)
Description
It estimates the var_u of observed or predicted values.
Usage
var_u(data = NULL, x, tidy = FALSE, na.rm = TRUE)
Arguments
data |
(Optional) argument to call an existing data frame containing the data. |
x |
Vector with numeric elements. |
tidy |
Logical operator (TRUE/FALSE) to decide the type of return. TRUE returns a data.frame, FALSE returns a list; Default : FALSE. |
na.rm |
Logic argument to remove rows with missing values (NA). Default is na.rm = TRUE. |
Details
The var_u is the sample, uncorrected variance. It is calculated as the mean of sum of squared differences between values of an x and its mean, divided by the sample size (n). It is uncorrected because it is divided by n, and by not n-1 (traditional variance). For the formula and more details, see online-documentation
Value
an object of class numeric within a list (if tidy = FALSE) or within a
data frame (if tidy = TRUE).
Examples
set.seed(1)
X <- rnorm(n = 100, mean = 0, sd = 10)
var_u(x = X)