Odegaard's Study Estimating the Number of Tropical Forest Beetles Illustrates

question 19

Multiple Choice

Odegaard's study estimating the number of tropical forest beetles illustrates that sampling from multiple sites

• A) is not affected by the sampling effort devoted to estimation.
• B) usually requires only limited effort by ecologists.
• C) can usually be made more easily by sampling only a single indicator taxon.
• D) is intensively all that is necessary to calculate species diversity.
• E) must, to be useful, be based on standardized sampling techniques.

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Definitions:

Mean

The average of a set of numbers, calculated by dividing the sum of these numbers by their quantity.

Normally Distributed Random Variable

A variable that follows a normal distribution, characterized by its bell-shaped curve, where its mean, median, and mode coincide.

Standard Deviation

A measure that quantifies the amount of variation or dispersion of a set of data values from the mean.

Standard Normal Random Variable

A special case of the normal distribution with a mean of zero and a standard deviation of one.