Two Fortran II Programs for the Univariate and Bivariate Analysis of Morphometric Data (Classic Reprint) - Softcover

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Excerpt from Two Fortran II Programs for the Univariate and Bivariate Analysis of Morphometric Data

Two computer programs, written in fortran II for the ibm 7094, perform univariate and bivariate analyses of morphometric data and plot bivariate scatter diagrams of pairs of data. Basically, the programs are designed to process arrays in which rows (up to 100) represent specimens and columns (up to 52) represent measured and computed variables. Alternatively, an input array may represent a single organism, for example a coiled snail or a segmented arthro pod, with the rows representing, respectively, individual whorls or segments. A high degree of adaptability to differ ent kinds of problems is achieved because of the numerous control cards which specify input and output format, table headings, and column numbers of variables on which opera tions are to be performed.

Program devices allow for the elimination of zeroes rep resenting missing data and for the conversion of selected columns to logarithms to the base 10. The computed uni variate statistics include the maximum, minimum, observed range, arithmetic mean, standard deviation, standard error of the mean, and coefficient of variation. Bivariate statistics include the correlation coefficient, slopes and intercepts of either regression lines or the reduced major axis, coefficients of relative dispersion, and factors for the computation of confidence intervals. Finally, the programs plot selected pairs of data on bivariate scatter diagrams and furnish the end points for the plotting of regression lines or reduced major axes.

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