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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... samples has been specified , there is only one centric sample for any area - all others would be eccentric samples ( Milne 1959 ) . Figure 8.4 Example of a study area subdivided into 20 8.4 291 Systematic Sampling 883 4 Systematic Sampling.
... sample taken at the center of each square . This is a cen- tric systematic area - sample . Statisticians have usually condemned systematic sampling in favor of random sam- pling and have cataloged all the pitfalls that may accompany ...
... systematic sampling on estimating the mean of this variable . If you are unlucky and sample at A , you always get the same measurement and obtain a highly biased estimate ... SAMPLING OF AERIAL TRANSECTS OF EQUAL 8.4 293 Systematic Sampling.