Simon, in your recent reply to me, you noted that EDF=1 corresponds to a 
straight line fit. Does the edf always indicate the polynomial exponent 
directly? We ask because Hothorn and Everitt said "Roughly, the 
complexity of a cubic spline is about the same as a polynomial of degree 
one less than the degrees of freedom." Sorry we attributed the latter to 
you, by the way. Will

-- 
William R. Shadish
Distinguished Professor
Founding Faculty
Chair, Psychological Sciences

Mailing Address:
William R. Shadish
University of California
School of Social Sciences, Humanities and Arts
5200 North Lake Rd
Merced CA  95343

Physical/Delivery Address:
University of California Merced
ATTN: William Shadish
School of Social Sciences, Humanities and Arts
Facilities Services Building A
5200 North Lake Rd.
Merced, CA 95343

209-228-4372 voice
209-228-4390 fax
wshadish@ucmerced.edu
http://faculty.ucmerced.edu/wshadish/index.htm
http://psychology.ucmerced.edu




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