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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2.1.1 Confidence Intervals How reliable are these estimates of population size?
To answer this critical question, a statistician constructs confidence intervals
around the estimates. A confidence interval is a range of values that is expected
Similarly, after you have estimated population size by the Petersen method and
calculated the confidence interval, the true population size (unfortunately not
known to you) will either be inside your confidence interval or outside it. You
For example, you may wish the 95% confidence interval to be +2.8 mm or less for
your whitefish. Alternatively, you can define the relative level of precision desired.
For example, you may wish the 95% confidence interval to be +6% of the ...