[R] split file equivalent in R

[Iasonas Lamprianou]

Dear all

(a)in SPSS PASW there is a 'split file' command is repeats the same analysis for all sub-groups. Is there a split file equivalent in R?

(b) Is there a package in R that will compute immediately statistics like Hosmer and Lemeshow Test, pseudo-R squares etc without my intervention? I am mostly interested to find easy solutions for my students. They are not mathematically/programming oriented (I am working in Education)

Thank you for your response 

Dr. Iasonas Lamprianou


Assistant Professor (Educational Research and Evaluation)
Department of Education Sciences
European University-Cyprus
P.O. Box 22006
1516 Nicosia
Cyprus 
Tel.: +357-22-713178
Fax: +357-22-590539


Honorary Research Fellow
Department of Education
The University of Manchester
Oxford Road, Manchester M13 9PL, UK
Tel. 0044  161 275 3485
iasonas.lamprianou at manchester.ac.uk