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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... stratified sampling , so that the equations can be related more easily to the ecological framework . Table 8.3 gives information on a stratified random sample taken on a caribou herd in central Alaska by Siniff and Skoog ( 1964 ) . They ...
... stratified mean obtained with optimal allocation of sample sizes S.E. ( proportional ) = Standard error of the stratified mean obtained with proportional allocation S.E. ( random ) Standard error of the mean obtained for the whole ...
... stratified mean proportion , ØST = Σ NnPh N where PST = Stratified mean proportion Nn = Size of stratum h h Ph = Estimated proportion for stratum h ( from equation [ 8.12 ] ) N = Total population size ( total number of sample units ) ...