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U.S. Department of Energy
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User's guide to ANYOLS: a flexible stepwise regression program

Technical Report ·
DOI:https://doi.org/10.2172/6350333· OSTI ID:6350333
ANYOLS is a stepwise regression program. It fits data using ordinary or weighted least squares. It selects the variables to put into the model in a stepwise way, based on F, s/sup 2/, MSE (based on C/sub p/), PRESS, or a user-written subroutine. The user can define forcing priorities to influence the order of entering variables. Instead of stepwise selection, the program can also try all possible combinations of any desired subset of the variables. Automatic output for the final model in a stepwise search includes plots of the residuals, studentized residuals, and leverages; if the model is not too large, the output also includes partial regression and partial leverage plots. A data set may be re-used so that several selection criteria can be tried. Flexibility is increased by allowing the substitution of user-written FORTRAN subroutines for several default subroutines. The program is written in CDC FORTRAN 4.
Research Organization:
EG and G Idaho, Inc., Idaho Falls (USA)
DOE Contract Number:
AC07-76ID01570
OSTI ID:
6350333
Report Number(s):
EGG-EA-5455
Country of Publication:
United States
Language:
English