Discrete, A Computer Program for Fitting Discrete Frequency Distributions
The computer program DISCRETE, which fits eight common discrete distributions, has been generalized to fit, in principle, any discrete distribution. The quid pro quo is that the user has to provide initial estimates of the parameters and expand two pre-existing subprograms in FORTRAN. These subprograms specify the likelihood function and calculate the expected probabilities for all cells using the final estimates. The analyses of five carefully selected entomological data sets show that the researcher has to be careful in defining the sampling unit to be neither too large nor too small and that sample size must be sufficiently large to permit discrimination between various distributions.
KeywordsSampling Unit Negative Binomial Distribution Discrete Distribution Fitted Distribution Sorghum Plant
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- Gates, C. E., F. G. Ethridge. & J. D. Geaghan. 1987. Fitting discrete distributions. User’s documentation for the FORTRAN computer program DISCRETE. Texas A&M University, College Station.Google Scholar
- Harris, M. K. 1972. Host resistance to the pear psylla in New York. Ph.D dissertation, Cornell University, Ithaca.Google Scholar
- Lin, Shih—Kang. 1985. Characterization of lightning as a disturbance to the forest ecosystem in East Texas. M.S. thesis, Texas A&M University, College Station.Google Scholar
- Ring, D. R. 1978. Biology of the pecan weevil, emphasizing the period from oviposition to larval emergence. M.S. thesis, Texas A&M University, College Station.Google Scholar