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tbct
2006 Jul 29
1
boxcox transformation
...from a to b) y.
After a qqplot I know, that they don't fit the normal probability.
I would like to transform these data with the boxcox transformation
(MASS), that they fit the model.
When I try
ybx<-boxcox(y~1,0)
qqnorm(ybx)
the plot is different from
library (TeachingDemos)
ybct<-bct(y,0) //
qqnorm(ybct)
How can I transform y to fit with the normal probability model?
Yours
Torsten