Re: [R] SpreadLevelPlot for more than one factor

Dear Sir, Many thanks and Best Regards, Ashim. On Sun, Jan 14, 2018 at 9:05 PM, Fox, John wrote: > Dear Ashim, > > I’ll address your questions briefly but they’re really not appropriate for > this list, which is for questions about using R, not general statistical >

Re: [R] SpreadLevelPlot for more than one factor

Dear Ashim, I’ll address your questions briefly but they’re really not appropriate for this list, which is for questions about using R, not general statistical questions. (1) The relevant distribution is within cells of the wool x tension cross-classification because it’s the deviations from

Re: [R] SpreadLevelPlot for more than one factor

Dear Sir, Many thanks for your reply. I have a query. I have a whole set of distributions which should be made normal / homoscedastic. Take for instance the warpbreaks data set. We have the following boxplots for the warpbreaks dataset: a. boxplot(breaks ~ wool) b. boxplot(breaks ~ tension)

Re: [R] SpreadLevelPlot for more than one factor

Dear Ashim, Try spreadLevelPlot(breaks ~ interaction(tension, wool), data=warpbreaks) . I hope this helps, John - John Fox, Professor Emeritus McMaster University Hamilton, Ontario, Canada Web: socialsciences.mcmaster.ca/jfox/ > -Original Message- > From:

Re: [R] SpreadLevelPlot for more than one factor

Dear All, I did this : > v = wool:tension > spreadLevelPlot(breaks ~ v) LowerHinge Median UpperHinge Hinge-Spread B:H 15 17 216 A:M 18 21 30 12 A:H 18 24 28 10 B:M 21 28 39

Re: [R] SpreadLevelPlot for more than one factor

Dear All, we need to do : library(car) for the spreadLevelPlot function I forgot to say that. Apologies, Ashim On Sun, Jan 7, 2018 at 10:37 AM, Ashim Kapoor wrote: > Dear All, > > I want a transformation which will make the spread of the response at all >