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Designing and Conducting Survey Research: A Comprehensive Guide, 4th Edition by Richard A. Parker, Louis M. Rea

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CHAPTER FIVEDESCRIPTIVE STATISTICSMeasures of Central Tendency and Dispersion

The balance of the book concerns the statistical basis for sampling and analyzing and presenting sample survey data. This chapter introduces the statistical concepts that are critical to the scientific sample survey process.

Measures of Central Tendency

It is often useful to include measures of central tendency in the frequency distribution table to augment the description of the data presented. Measures of central tendency are statistics that provide a summarizing number that characterizes what is “typical” or “average” for those data. The three foremost measures of central tendency are the mode, the median, and the arithmetic mean.

Mode

The mode is that category ...

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