## Ecological MethodologyThis coherent text translates the methods of statisticians into "ecological English" so that students may readily apply these methods to the real world. |

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Some types of probability sampling are more convenient than others, and simple

**random sampling**is one. Simple

**random sampling**is defined as follows: 1. A

statistical population is defined that consists of N sampling units; 2. We select n ...

If you are unlucky and sample at A, you always get the same measurement and

obtain a highly biased estimate of the mean. If you are lucky and sample at B, you

get exactly the same mean and variance as if you had used

**random sampling**.

Simple

**random sampling**is the easiest and most common sampling design. Each

possible sample unit must have an equal chance of being selected to obtain a

**random sample**. All the formulas of statistics are based on

**random sampling**, and

...

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Ecological Methodology Charles J. Krebs,CHARLES L. KREBS,Professor of Zoology Charles J Krebs No preview available - 1999 |