calculateVarCov {CompositeReliability}

calculateVarCov: Estimate variance and covariance components of assessee p S_p and mean assessment scores i nested in assessees S_iINp, and determine the error scores S_delta

Description

calculateVarCov: Estimate variance and covariance components of assessee p S_p and mean assessment scores i nested in assessees S_iINp, and determine the error scores S_delta

Usage

calculateVarCov(mydata, n)

Arguments

mydata

A dataframe containing columns ID, Type, Score (numeric)

n

A vector containing for each Type the number of score or assessments assessments, e.g. averages, requirements.

Value

A list containing the observed variances, covariances and errors scores

Examples

varcov <- calculateVarCov(mydata, c("A"=3, "B"=3, "C"=2))
varcov$S_p
varcov$S_iINp
varcov$S_delta