Re: [R] How to get around heteroscedasticity with non-linear least squares in R?

From: Christian Ritz <ritz_at_kvl.dk>
Date: Wed 22 Feb 2006 - 20:22:20 EST


Hi Quin,

the package 'drc' on CRAN deals with modelling dose-response curves.

Moreover it allows adjustment for heterogeneity by means of

  transformation (Box-Cox transformation)

  modelling the variance as a power of the mean.

See the package documentation for more features.

Christian



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