chol2invData

This dataset was added because it generates an error in function 'chol2inv' when
	trying to invert the variance-covariance matrix 'V' of the mixed model 'value~ID+(Site)'.
	This dataset and the associated mixed model are part of the unit-test collection of the
	package.

datasets

ANOVA-type estimation (prediction) of random effects in linear mixed models is implemented, following
             Searle et al. 1991 (ANOVA for unbalanced data). For better performance the SWEEP-Operator is now implemented
             for generating the ANOVA Type-1 error sum of squares. The primary objective of this package is to perform
             Variance Component Analyses (VCA). This is a special type of analysis frequently used in verifying the
             precision performance of diagnostics. 
             The Satterthwaite approximation of the total degrees of freedom and for individual variance components is
             implemented. These are used in the Chi-Squared tests against a claimed value, and in the respective confidence intervals. 
             Satterthwaite's approximation of denominator degrees of freedom in t-/F-tests of fixed effects are also
             available. 
             There are several functions for extracting, random effects, fixed effects, variance-covariance
             matrices of random and fixed effects. Residuals (marginal, conditional) can be extracted as raw, standardized
             and studentized residuals.
             Additionally, plotting methods for residuals and random effects and a variability chart are available. The latter
             is useful for visualizing the variability in sub-classes emerging from the experimental design.

Andre Schuetzenmeister

Variance Component Analysis

chol2invData function

A data frame with 158 observations on the following 3 variables.
<ul><li>valueThe response variable.</li><li>IDVariable with 6 levels corresponding to samples.</li><li>SiteVariable with 3 levels corresponding to sites/devices.</li></ul>

chol2invData: Dataset Generating Error in Function 'chol2inv'

Description

Usage

Arguments

format