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Full-Text Articles in Physical Sciences and Mathematics
Estimating The Parameters Of Truncated Distributions, Mukul Mohan Mittal
Estimating The Parameters Of Truncated Distributions, Mukul Mohan Mittal
Mathematics & Statistics Theses & Dissertations
The problem considered here is the estimation of the parameters of some special truncated distributions. If the sample observations are restricted to the interval {O, T} with T known, then it is well known in the literature that the method of maximum likelihood fails to provide a finite estimate, for the mean of an exponential distribution, whenever the sample mean is greater than T/2 (Deemer and Votaw, 1955, Ann. Math. Statist. 26, 498-504). Not so well known is the nonexistence of the maximum likelihood estimator (m.l.e.), under certain conditions, for the scale parameter of a gamma distribution from a truncated …
An Intraseason Forecasting System For Commercial Marine Fisheries, Erik J. Barth
An Intraseason Forecasting System For Commercial Marine Fisheries, Erik J. Barth
OES Theses and Dissertations
The reliability of an intraseason yield estimation technique which is commonly used by Pacific salmon harvest managers is evaluated for applicability to a variety of commercial finfish and crustacean fisheries. The estimation technique is known as the average timing or the average performance model. The method is not easily related to standard statistical models, but does show some similarity to both a single parameter linear regression model and the ratio estimator of sampling theory. A comparison of these models, a two parameter linear model, and a regression estimator is made to determine if the precision of forecasts of performance can …