[R] PRESS again

Jacob van Wyk jlvw at rau.ac.za
Thu Feb 27 13:37:03 CET 2003

Sorry for the repeat.
The PRESS statistic is defined as
sum(y-yhat(i))^2, where yhat(i) denotes the ith predicted value using
all the data except the ith case (as used typically in linear models).
Thanks again

Jacob L van Wyk
Department of Mathematics and Statistics
Rand Afrikaans University
P O Box 524
Auckland Park 2006
South Africa
Tel: +27-11-489-3080
Fax: +27-11-489-2832



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