| Abstract: | Use of previously codes and tested subroutines simplifies and speeds up program development and testing. This report presents routines that can be used to calculate various probability distributions and other functions of importance in statistical hydrology. The routines are designed as general-purpose Fortran subroutines and functions to be called from user-written main programs. The probability distributions provided include the beta, chisquare, gamma, Gaussian (normal), Pearson Type III (tables and approximation), and Weibull. Also provided are the distributions of the Grubbs-Beck outlier test, Kolmogorov ‘s and Smirnov ‘s D, Student ‘s t, noncentral t (approximate), and Snedecor F tests. Other mathematical functions include the Bessel function I (subzero), gamma and log-gamma functions, error functions and exponential integral. Auxiliary services include sorting and printer plotting. Random number generators for uniform and normal numbers are provided and may be used with some of the above routines to generate numbers from other distributions. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 14475 |
| Citation Author: | Kirby, W. H. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iv, 64 p. ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Open-File Report |
| Citation Series Code: | OFR |
| Citation Series Number: | 80-448 |
| Citation Search Results Text: | Computer routines for probability distributions, random numbers, and related functions; 1980; OFR; 80-448; Kirby, W. H. |
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| Citation Year: | 1980 |
| Type: | citation/reference |
| Text: | Computer routines for probability distributions, random numbers, and related functions; 1980; OFR; 80-448; Kirby, W. H. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/of/1980/0448/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/of/1980/0448/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
| Superseded by: |
http://pubs.er.usgs.gov/publication/wri834257
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