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How to get around heteroscedasticity with non-linear least squares in R?
3 messages · Quin Wills, Kjetil Halvorsen, Brian S Cade
Quin Wills wrote:
I am using "nls" to fit dose-response curves but am not sure how to approach more robust regression in R to get around the problem of the my error showing increased variance with increasing dose.
package "sfsmisc" has rnls (robust nls) which might be of use. Kjetil
My understanding is that "rlm" or "lqs" would not be a good idea here. 'Fairly new to regression work, so apologies if I'm missing something obvious. [[alternative HTML version deleted]]
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