sigma.kspm {KSPM}

Extract residuals standard deviation

Description

Returns the residuals standard deviation (sigma) for object of class "kspm".

Usage

## S3 method for class 'kspm'
sigma(object, ...)

Arguments

object

an object of class "kspm", usually, a result of a call to kspm.

...

additional optional argument (currently unused).

Details

The value returned by the method is \sqrt{\frac{RSS}{edf}} where RSS is the residual sum of squares and edf is the effective degree of freedom.

Value

typically a number, the estimated standard deviation of the errors ("residual standard deviation")

Author(s)

Catherine Schramm, Aurelie Labbe, Celia Greenwood

See Also

kspm for fitting model, summary.kspm, residuals.kspm, nobs.kspm, deviance.kspm.