Re: [R] Tobit model fluid milk consumption

2009-12-04 Thread Terry Therneau
First, note that all attachments are removed from messages sent to R-help, please use plain text only. I took the time to bring up the attachment in a web browser (there is a link to it), but you are unlikely to get a lot of readers when the question is captured as a pdf. 1. Tobit regression on

[R] tobit model fluid milk consumption

2009-12-04 Thread mrsilva
__ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.

[R] Tobit model fluid milk consumption

2009-12-04 Thread mrsilva
Hi all, I fit a Tobit model to Fluid milk consumption (dependent variable) data using survreg. 1) The square root of the dependent variable was used to correct for heteroscedasticity since it provides the best fit. 2) The output before transformation of numeric variables in scores (by Make.Z)

[R] Tobit model fluid milk consumption

2009-12-03 Thread mrsilva
Hi all, I'm from Brazil. I fit a Tobit model to FLUID MILK CONSUMPTION (DEPENDENT VARIABLE) data using survreg (attached). I am confused about the output interpretation and I would like yours explanations. Thanks, Marcio Roberto Silva Tobit model.pdf Description: Adobe PDF document