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PROB.HLP
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1995-08-07
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4KB
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123 lines
01
PROBABILITY FUNCTIONS
This program enables you to compute a variety of probability statistics
or related functions. All input is from the keyboard so no data file is
needed.
You will be presented with a menu from which you can select the desired
function by pressing the lower case letter beside the option which you
wish to use.
All output is sent to the screen. However, you can use the "PrtSc" pro-
cedure to obtain a hard copy if desired.
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INPUT AN INTEGER VALUE
If you will enter an integer value its factorial will be computed and
reported to you. If you enter a negative value, it will be converted to
a positive integer.
If you wish to exit you may enter an * and press <cr>.
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03
PERMUTATIONS AND COMBINATIONS
Enter the value of n and press <cr>. Then enter the value of r and press
<cr>. The number of permutations and combinations will be computed for
n things taken r at a time.
If you wish to exit you may enter an * and press <cr>.
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04
T- AND Z-RATIO PROBABILITIES
If you have a t- or z-statistic, enter the number of degrees of freedom.
The one- and two-tailed probability will then be computed and reported.
If you wish to exit you may enter an * and press <cr>.
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05
F-RATIO PROBABILITIES
Enter dfn = degrees of freedom for the numerator and press <cr>. Then
enter dfd = degrees of freedom for the denominator and press <cr>. Enter
next the value of the F-statistic and press <cr>. The probability for
the upper tail of the F-distribution will then be reported to you.
If you wish to exit you may enter an * and press <cr>.
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06
BINOMIAL PROBABILITIES
Enter n = an interger and press <cr>. Enter r = an integer less than n
and press <cr>. Then enter p = the probability for of a successful outcome
( 0.0 >= p <= 1.0 ). The results reported are the probability at x = r and
the cumulative probability for x >= r.
If you wish to exit you may enter an * and press <cr>.
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POISSON PROBABILITIES
Enter m = the mean and press <cr>. Enter x = a value in the distribution.
The results reported are the probability of obtaining x and the probability
of obtaining a value of x or greater.
If you wish to exit you may enter an * and press <cr>.
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GEOMETRIC PROBABILITY
Enter n = the number of trials until the first success is observed (must
be an interger) then press <cr>. Enter p = the probability of a successful
outcome ( 0.0 >= p <= 1.0 ). The results reported are the probability at
x = n and the cumulative probability from x to n.
If you wish to exit you may enter an * and press <cr>.
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09
HYPERGEOMETRIC PROBABILITIES
Enter N = the total number of elements, press <cr>. Enter r = the total
number of successes in the N elements, press <cr>. Enter n = the number
of elements drawn from N, press <cr>. Enter x = the number of successes
that were drawn from n then press <cr>. The results reported are the prob-
ability at x and the cumulative probability for x through n.
If you wish to exit you may enter an * and press <cr>.
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EXPONENTIAL PROBABILITY
Enter the mean and x = the point at which you wish the probability to be
computed at. Note that the results for a continous random variable is
reported in terms of area. The area beyond x and the area below x are
reported.
If you wish to exit you may enter an * and press <cr>.
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CHI-SQUARE PROBABILITY
Enter the degrees of freedom, df, and press <cr>. Then enter the value
of Chi-square and press <cr>. The reported probability is area in the
upper tail of the Chi-square distribution.
If you wish to exit you may enter an * and press <cr>.
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