## Abstract

The previous chapters looked at *z*-tests and *t*-tests for a single **mean.** However, social research is not always interested in investigating the mean of a distribution. We might be interested in other aspects of the population under investigation. For example, we might not be interested in the average height of people studying statistics, but rather the **proportion** of people above or below a certain height. Although this question is slightly different from one that investigates the mean of a distribution, the procedures for making an inference are basically the same. We will still conduct a *z*-test, but this time based on a sample proportion rather than a sample mean.

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## Copyright information

© George Argyrous 1997