This article provides examples of the use of the median as a measure of central tendency. Students should discuss why the median is the appropriate measure for age data. [A non-symmetric distribution with a barrier at one end (0) and a long tail at the other.]

With all of the other figures and percentages in the article there are many opportunities to set activities and problems. In fact students could be asked to set tasks for each other. Graphing opportunities exist, as well as problems involving percentages. [What was the percentage increase in the number of people over 85 in the 20 years, 1976 to 1996? How many women and men are in this age group?]

Where to next?Student Questions for this article

Newspaper article

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Index - Data Reduction

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