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Statistics in Taxonomic Descriptions

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image of Nematologica
For more content, see Nematology.

A few basic statistical procedures are explained for use in describing new or known nematode species. The mean X and the standard deviation s should be calculated from many specimens (up to and above 30) for every measurement in a sample. Computation of the sample mean (X) and standard deviation (s) permits an estimate of the confidence intervals to be made for the population mean, X + (txs/√n), and for a given percentage of the population (X + 2 xs). Observation of several populations is advocated to obtain an estimate of mean and range of a measurement in the species.

Affiliations: 1: California Department of Food and Agriculture, Nematology Lab, Room 340, 1220 N Street, Sacramento, California 95814, U.S.A.


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