Cannabis users not so way out

This article looks at one of the "risk" areas which may be of interest to teachers of the health part of the curriculum. In fact it may be quite contentious because of the conclusions it draws. The last paragraph is of interest, however, because of the introduction of two measures of the middle of the data set of 268 people. The use of two different terms, "average" and "median", appears to indicate two different measures. It is important to discuss with students why the arithmetic mean is appropriate to describe the average age of the participants in the study.

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