[R] Inverse Gaussian Distribution

Louisa Louisa_Lafrez at hotmail.com
Mon Jan 3 21:03:49 CET 2011


I want to fit an inverse gaussion distribution to a data set. 

The predictor variables are gender, area and agecategory.
For each of these variables I've defined a baseline 

#agecat: baseline is 3 
data<-transform(data, agecat=C(factor(agecat,ordered=TRUE),

The variable 'area' goes from A to F (6 areas: A,B,C,D,E,F)

How can i manipulate the data to set the baseline of area to C? 
R is producing errors when I'm trying to do so. 

I'll be very thankful for any help you can provide. 

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