lsr (version 0.1.1)

aad: Mean (average) absolute deviation from the mean

Description

Calculates the mean absolute deviation from the sample mean.

Usage

aad(x, na.rm = FALSE)

Arguments

x

A vector containing the observations.

na.rm

A logical value indicating whether or not missing values should be removed. Defaults to FALSE

Value

• Numeric.

Details

The aad function calculates the average (mean) absolute deviation from the mean value of x, removing NA values if requested by the user. It exists primarily to simplify the discussion of descriptive statistics during an introductory stats class.

See Also

mad

Examples

# basic usage
X <- c(1, 3, 6)  # data 
aad(X)           # returns a value of 2

# removing missing data
X <- c(1, 3, NA, 6)   # data 
aad(X)                # returns NA 
aad(X, na.rm = TRUE)  # returns 2