Separating mixtures of normal distributions: basic programs for Bhattacharya’s method and their applications to fish population analysis - BOBP/MAG/4
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This manual describes computer programs written in Microsoft BASIC (version 2.20B) for use on an Apple Ile micro-computer (with CP/M operating system) and EPSON RX-80 F/T printer. These programs include a modification of Bhattacharya’s method for identifying and separating normal distributions, in a mixture of distributions in length frequency data, and computation of Chi square statistics for testing goodness of fit, as described by Pauly and Caddy (1985). This package includes a pr ogram that plots the frequency distributions for several samples of data. It is useful for estimating growth parameters and calculates the catch at length for each of the mean length groups separated, and gives 95% and 99% confidence limits for each mean