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- SHORT-T (Student's T-test, short version)
-
- If you already know the mean, variance and N of two groups, it is not
- necessary to type in all the individual numbers to run a T-test. This
- program does the entire test based on these three measurements.
-
- EXAMPLE: Data is the same as for the long version of the T-test, as
- follows:
-
- GROUP 1 GROUP 2
-
- VARIANCE 0.110 0.10635
-
- MEAN 1.137 1.325
-
- N 10 1O
-
-
- The only caution that need be observed is that the group with the LARGEST
- variance must be Group 1, when entering the data. All of the tests are the
- same as in the long version of the T-test. That is, an F-test is first
- applied, and different methods are used to compute the T value based on the
- results of the F-test. Both an exact P-value and statements concerning
- significance are printed out.
-
- Data can be entered either directly from the keyboard, or via a WordStar
- non-document file. The file format is as shown below:
-
- Short-T test data from file <-- Title, up to 65 characters of any kind.
- 0.110 0.10635 <-- *Variance 1, variance 2.
- 1.137 1.325 <-- Mean 1, mean 2.
- 10 10 <-- N1, N2.
-
- * Variance 1 MUST BE the larger variance.
-
- REFERENCE: Mather, K. 1951 Statistical Analysis in Biology. Methuen and
- Company, Ltd., London. Pages 56-57.
-
- FORTRAN VERSION: Dr. Stanley Kaplan May 65
- BASIC VERSION: Dr. Stanley Kaplan Jan 82
- PASCAL VERSION: Dr. Stanley Kaplan Sep 85
- UPDATES: Oct 86 (Version 2.00)
- Feb 87 (Version 2.10)
- Feb 88 (MS-DOS Version 2.2)