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1995-01-10
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N L R E G
Linear and Nonlinear Statistical Regression Analysis
Phillip H. Sherrod
Member, Association of Shareware Professionals (ASP)
NLREG performs statistical regression analysis and curve fitting to
determine the values of parameters for an equation, whose form you
specify, that cause the equation to best fit a set of data values.
NLREG can handle linear, multivariate, polynomial, exponential, and
general nonlinear equations. You specify the form of the equation
using ordinary algebraic notation. In addition to determining
parameter values, NLREG computes confidence intervals and other
statistics. The data values and fitted equation can be plotted.
NLREG can also be used to find the root of a nonlinear equation.
NLREG is the most powerful shareware regression program available.
Hardware requirements: IBM PC compatible computer with at least
512KB memory. A CGA, EGA, or VGA display adapter is needed only if
a plot is requested. A numeric coprocessor is used if it is
present but is not required.
NLREG is a shareware program. Users are granted a 30 day trial
use. If it is used beyond the trial period a registration fee must
be sent to the author. The registration fee is $45 for shipments
in the USA or $50 for shipments outside of the USA. Registered
users receive a registered version of the program, a bound, typeset
manual, and three months of support. The registered version of
NLREG omits the startup shareware notification screen and provides
the ability to print plots on LaserJet printers.
You are welcome to make copies of the shareware version of NLREG
and pass them on to friends or post this program on bulletin boards
or distribute it via disk catalog services, CD ROMS, or other means
provided the entire NLREG distribution is included in its original,
unmodified form. A distribution fee may be charged for the cost of
the diskette (or CD ROM), shipping and handling. Vendors are
encouraged to contact the author to get the most recent version of
NLREG. The registered version of NLREG is not shareware and may
not be redistributed.