Using Statistics in Argument: Averages

An average gives us information about some class of things, S; what it tells us is the central value of Ss on some quantitative variable.

There are two different kinds of average: the arithmetic mean and the median.

To find the arithmetic mean, you add up the values of each S and then divide by the number of Ss.

The median score is the one that lies in the middle of all the scores, so that an equal number of scores are higher and lower.

Totals | Ratios | Frequency | Averages
Using Statistics in Argument

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