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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... equation ( 8.3 ) , $ 2 = = Σ fxx2 - ( Efxx ) 2 / n n - 1 - 969,685 ( 17,255 ) 2/315 - 314 = 78.008 The standard error of the mean weight , from equation ( 8.4 ) , is Si = n 78.008 315 = 1 = 0.4311 315 1262 From equation ( 8.8 ) we ...
... equation ( 8.41 ) For example , from the data in Box 8.4 , s ? = 3.14 , s2 = 284.3 , and M = 100 possible subsamples ... equation [ 8.43 ] ) you can determine the sample size of the primary units ( n ) from knowing what standard error ...
... equations ( 9.47 ) , and if you wish to work at a 90 % confidence level , use 1.645 instead of 1.96 . Step 4. Plot the limits U , and Z , ( equation [ 9.47 ] ) against sample size ( n ) to produce a graph like that in Figure 9.10 . Note ...