Benjamin/Cummings, 1999 - Science - 620 pages
This 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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The observed mean is, from the grouped version of equation (8.2), - 2 fix - (4)(32)
+ (13)(37) + (20)(42) + . . . –––– 315 The observed variance is, from the grouped
version of equation (8.3), 2 fix - (2 fox)on 2 s n – 1 - 2 - 969,685 #29 /315 ...
and where m = Optimal number of elements to sample per primary unit s3 =
Variance among elements within primary units – o os (x, - 3): - - = X X as defined
in equation (8.42) n(m – 1) s? = s? - (s3/M) = component of variance among unit ...
Calculate the slope (b) and y-intercept (a) of the log-log regression for Taylor's
Power Law (equation [9.45]) in the usual way (e.g., Sokal and Rohlf 1995,466).
Step 2. Determine the critical density level Auo to set up the two-sided alternative: