subject:"\[R\] Reversing data transformation"

Re: [R] Reversing data transformation

2013-04-06 Thread Bert Gunter

Sorry --failed to cc the list. -- Bert On Fri, Apr 5, 2013 at 9:29 PM, Bert Gunter wrote: Have you tried plotting your data?! >library(lattice) >densityplot(yourdata) Forget tests of normality -- they are a BAD idea, despite what the statistics textbooks say (IMHO obviously) -- and focus on

[R] Reversing data transformation

2013-04-05 Thread Beatriz González Domínguez

Hi everybody, I would be very grateful if you could give me your thoughts on the following issue. I need to perform Box-Cox (bcPowerÂÂ) transformation on my data. To do this, I calculated lambda using the function 'ÂÂpowerTransform'ÂÂ. powerTransform(data) However, I got an error mes