[R] Correlations by group

[Peter J. Lee]

Many thanks,

your solutions solve a number of my problems (not least weening myself off SAS)

Best wishes,

Peter
_________________________

Peter James Lee
Assistant Professor

Psikoloji Bölümü
Bilkent University
Bilkent
Ankara
Turkey
06800

e-mail: peterjl at bilkent.edu.tr
office: (90) 312 290 1807
home: (90) 312 290 3447
website: http://www.bilkent.edu.tr/~peterjl/index.html