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.
Results 1-3 of 82
Charles J. Krebs, CHARLES L. KREBS, Professor of Zoology Charles J Krebs. Ps
= Proportion of quadrats expected to have 3 earthworms 2.243 = 2 -2.24 - e. (#).
0.1994 Similarly, 2.244 P. .."(. ) = 0.1117 (4)(3)(2) 2.245 ~2.24 || — | = 0.0500 e ...
We calculate the expected frequencies from the sample size (n = 51) and the
formula Expected relative Cumulative Cumulative frequency in = | probability in |
– | probability in class x + 1 class x + 1 class x with the expected relative
xpected taking care to combine the last two classes so that the expected value is
above 3. Observed Expected (O – E)? Class (m) no. of crickets no. E 0–3.55 15
5.47 16.60 3.55–7.05 16 12.93 0.73 7.05—10.55 6 13.88 4.47 10.55–14.05 9 ...