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1994-01-28
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N O N L I N
Linear and Nonlinear Statistical Regression Analysis
Phillip H. Sherrod
Member, Association of Shareware Professionals (ASP)
Nonlin 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. Nonlin 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, Nonlin computes confidence intervals
and other statistics. The data values and fitted equation can be
plotted. Nonlin can also be used to find the root of a nonlinear
equation. Nonlin 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.
Nonlin 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
Nonlin 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 Nonlin
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 Nonlin 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 Nonlin. The registered version of Nonlin is not
shareware and may not be redistributed.