Ecological MethodologyThis coherent text translates the methods of statisticians into "ecological English" so that students may readily apply these methods to the real world. Ecological Methodology, Second Edition provides a balance of material on animal and plant populations. It teaches students of ecology how to design the most efficient tests in order to obtain maximum precision with minimal work. The first part of the text focuses on biological and technical issues in statistical methodology. Students learn about advances that have been made in designing better sampling devices, along with the techniques and equipment used for sampling. The second part deals with creating solid statistical design, and presents all methods that are well-known to statisticians in a language and context that students will easily understand. |
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... ratio experiments . We can illustrate the utility of this graph with an example . Suppose you are planning a change - in - ratio experiment for a deer population and you expect a change in the sex ratio by at least 0.30 over the hunting ...
... ratio of breeding females to breeding males in a bird population . Ratios are peculiar statistical variables with ... ratio : R = = Estimated mean ratio of x to y x = Observed mean value of x where R y = Observed mean value of y 1812 ...
... ratio first suggested by Savage ( 1931 ) and by Williams and Marshall ( 1938 ) : Wi = Pi ( 13.21 ) where wi 0i = = P1 = Forage ratio for species i ( Index 2 of Cock 1978 ) Proportion or percentage of species i in the diet Proportion or ...