RMS Function

Returns the root mean square

Category: Descriptive Statistics

Syntax

RMS ( argument <, argument , >)

Arguments

argument

• is a non-negative numeric constant, variable, or expression.

• Tip: The argument list can consist of a variable list, which is preceded by OF.

Details

The root mean square is the square root of the arithmetic mean of the squares of the values. If all the arguments are missing values, then the result is a missing value. Otherwise, the result is the root mean square of the non-missing values.

Let be the number of arguments with non-missing values, and let x ₁ , x ₂ , ____, x _n be the values of those arguments. The root mean square is

Examples

SAS Statements	Results
x1=rms(1,7);	5
x2=rms(.,1,5,11);	7
x3=rms(of x1-x2);	6.0827625303