fitSameMeanDifferentVarianceModel {compositions}

Fit Same Mean Different Variance Model

Description

Fits a model of the same mean, but different variances model to a set of several multivariate normal groups by maximum likelihood.

Usage

fitSameMeanDifferentVarianceModel(x)
          

Arguments

x

list of rmult type datasets

Details

The function tries to fit a normal model with different variances but the same mean between different groups.

Value

mean

the estimated mean

vars

a list of estimated variance-covariance matrices

N

a vector containing the sizes of the groups

Author(s)

K.Gerald v.d. Boogaart http://www.stat.boogaart.de

References

Aitchison, J. (1986) The Statistical Analysis of Compositional Data Monographs on Statistics and Applied Probability. Chapman & Hall Ltd., London (UK). 416p.

See Also

acompNormalLocation.test

Examples

fitSameMeanDifferentVarianceModel