Statistics/Regression.pm is a multivariate linear regression package. That is, it estimates the c coefficients for a line-fit of the type
y= c(0)x(0) + c(1)x1 + c(2)x2 + ... + c(k)xk
given a data set of N observations, each with k independent x variables and one y variable. Naturally, N must be greater than k---and preferably considerably greater. Any reasonable undergraduate statistics book will explain what a regression is. Most of the time, the user will provide a constant ('1') as x(0) for each observation in order to allow the regression package to fit an intercept.
BACKGROUND WARNING
You should have an understanding of OLS regressions if you want to use this package. You can get this from an introductory college econometrics class and/or from most intermediate college statistics classes. If you do not have this background knowledge, then this package will remain a mystery to you. There is no support for this package--please don't expect any.
CHANGES SINCE VERSION 0.15
INSTALLATION
To install this module type the following:
perl Makefile.PL
make
make test
make install
DEPENDENCIES
None
COPYRIGHT AND LICENSE
Copyright (C) 2001,2004,2007 Ivo Welch <ivo.welch@yale.edu>
This library is free software; you can redistribute it and/or modify it under GNU General Public License.