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PsL Monthly 1993 December
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PSL Monthly Shareware CD-ROM (December 1993).iso
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1993-10-01
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ST-01: Statistics and Math
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0261 Analysis Small Programs Disk
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FFT 1.6
Sampson, Steve
$0
is a statistics program that uses the Fast Fourier Transform to produce a
Frequency Domain display from the Time Domain data input.
Fast Fourier Transform (FFTRANS)
Halloran, Mike
$0
contains FORTH code to implement the FFT transform, and do some simple
character graphics on a terminal.
LineQ
Baker, Wayne G.
$25
solves up to 40 linear equations simultaneously using the Gaussian Elimination
Method.
LNRegr.BAS
is a linear regression program.
MultLnrg.BAS
Alonso, J. R. F.
$?
calculates multiple linear regression coefficients.
NonLin
Whitman, Dave
$?
performs non-linear least squares analysis to determine parameters to fit any
function to observed data.
PolyFit
is an example of the use of systems of linear equations to produce a
polynomial equation which approximates the behavior of experimentally obtained
data points as closely as possible.
Regress
Engineering Software, Inc.
$?
uses regression analysis to find equations of curves that most closely fit the
ordered data sets (X,Y) entered, and then allows the user to interpolate
values based on the equation selected.
Stats
contains an assortment of statistical programs. (BASIC required.)
--------------------------------
END OF SMALL PROGRAMS DISK #0261
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2850 Analysis #2 Small Programs Disk
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Adapt
LEDS Publishing Co., Inc.
$?
is a forecasting program that features Time Series Analysis with adaptive
filtering, which works on the theory that the best future forecast can be made
if a set of weights is found that best forecasts the available past data.
BASist 1.1
Hodges, Morrison M.D.
$?
is a basic statistics program. It takes a series of numbers and calculates a
variety of statistics, including the mean, median, variance, standard
deviation, coefficient of variation, measures of skewness and kurtosis, as
well as the standard errors and confidence limits for these statistics.
Finally, the Kolmogorov-Smirnov Dmax statistic is presented (K-S Dmax is an
index is normality of distribution), and the null hypothesis test for the K-S
Dmax is stated for the 5% level.
CHI-SQ.BAS
does chi-square calculations.
Confidence Level Calculator (CONLVL)
Ford, L. M.
$15
calculates (statistical) confidence levels for small data sets and the number of
tests required to reach user requested confidence levels.
ElStat
Floddy, Dale R.
$0
is a simple, menu-driven statistics program. Features include descriptive stats
(mean, sample variance, standard deviation), correlation, two-sample t-tests,
chi-square, and one- and two-factor ANOVA.
EQNSolve.BAS
will solve a system of "n" linearequations in "n" unknowns.
LIN-REG.BAS
is a linear regression program.
Gauss
Ng, Thomas
$10
is a numerical analysis program. It is for engineers and other professionals
who frequently need to perform matrix computations. It operates on square
matrices such as those with an equal number of rows and columns, up to a
maximum size of six rows by six columns.
LSPR 1.0
Sund, S.E.
$8
is a linear polynomial regression program. It finds the coefficients of a
linear least squares equation.
Tandem Queuing Simulation (TQSIM)
JJO Software
$5
simulates multiserver queuing elements whose arrival rates and service times
can be approximated by the Poisson distribution.
--------------------------------
END OF SMALL PROGRAMS DISK #2850
--------------------------------
--------------
1555 Curve Fit Small Programs Disk
--------------
Curve
derives the linear, exponential, logarithmic, and power equations to fit a
set of input data points x(I),y(I). All the equations are converted to the
linear form Y=A+BX, and the linear form is fit to the data by the method of
least mean squares.
Forecst
Loy, Michael D.
$10
is designed to analyze time-series data and develop a smoothed curve that
allows for a more accurate extrapolation of past data. This is not another
curvefitting program. While the program does generate a correlation
coefficient, it does not attempt to force an equation on the data. This
program is useful for individuals and businesses that need to predict future
values (i.e. profits, sales) based on past history which is highly variable.
LeastQ 2.1
Fox, John D.
$0
is a general purpose curve fitting program designed to find the coefficients
a[i] of a function, y(x), of the form: (1) y(x) = a[0] + a[1]*f1(x) + a[2]
*f2(x) + . . . . or (2) Chisq = Sum(k = 1;Npts) of (y[k] -ycalc(x[k])) ^2
/err[k]^2. Sample data sets are contained in the file DATA.ARC which requires
ARCE or PKXARC to extract. The program requires an 8087 math chip and
CGA-compatible card/monitor. Turbo Pascal source code is included.
List2Fit (LIST2FI)
Lemm, Bob
$0
aids in describing data for computer modeling. It uses the Least Squares Fit
method of describing a set of X-Y points. EGA is required for graphics
display.
NLFITD 2.6
Hood, William G.
$0
is a nonlinear curve fitter. Marquardt's algorithm is used to find values of
parameters that make an equation fit a group of data points in a least squares
sense. The equation can be nonlinear with regard to parameters.
Normal-Z
computes areas under the normal distribution probability curve from the
mean to a designated `Z' value. This program also can compute `Z' values from
a given area.
PwrStar 1.12
provides a polynomial best fit to a given set of data by the method of
least squares. The user may interactively choose up to a 10th order polynomial
fit and get an automatic display of the input and the fitted curve. The files
SAMPLE#.DAT go with PWRSTAR.
--------------------------------
END OF SMALL PROGRAMS DISK #1555
--------------------------------
---------
0702 Math Small Programs Disk
---------
A_Solver 1.0
Ryan Software
$0
is an expression solver. For example, 29*2^4 resolves to 464. `C' source code
is included, as is an OBJ file that can be linked into any program to provide
equation solving in your own programs.
Bin-CVT
Relf, Robert B.
$?
converts positive integers between bases 2,10 and 16. It will handle binary
to 16 bits, decimal to 65535, hexadecimal to ffff.
DIV
Hilliard, Cino
$0
is a high precision division routine that divides very large numbers very,
very quickly. ZBASIC source code is included.
Eval 1.1
TriSoft Technologies
$5
parses and solves a mathematical expression, optionally showing intermediate
evaluation steps in the process.
Example: EVAL Sin(3)=Cos(6tan(45))-Sqrt(3*Ln(Exp(3)))^2
EZ-Convert 1.0 (EZC)
Driscoll, Brian S.
$15
converts between various units of measure. Other conversion programs in the
PsL are either not as extensive as this one or they force you to choose from a
set of predefined relationships. For example, one will convert between pints
and liters but not between quarts and liters. However some of the others
cover some units not covered by this one. EZ-Convert's categories are Length,
Area, Volume, Weight, and Temperature.
EZTrig
Thornton, Dan
$10
is an easy to use program that quickly solves oblique and right triangles by
input of values for variables listed on a graphics depiction of a triangle.
Useful for engineers, students, and anybody interested in trig. May not work
right on some VGA systems.
Fourier.BAS
is a fast fourier transform program.
Func3
Walker, Tad
$0
computes trigonometry and other miscellaneous mathematical functions.
MathFunc.BAS (MATHFNC)
Bagshaw, Tony
$?
computes complex mathematical functions.
Matrix
Ruzinsky, Steven A.
$?
finds B and/or the inverse of A.
Matrixss
Schneider, Scott
$0
solves matrix algebra problems.
Matrix2
Hutchinson, William M.
$?
is a matri