V.14:11 (465-470): SIDEBAR: Normalize to Compare

NORMALIZE TO COMPARE

You can't compare apples and oranges - but if you need to try, normalizing the data is a way to make unlikely comparisons possible. A traditional method is to map values from the raw data onto a standard normal or bell curve. This lets you state, for example, that the apple has a "normal" weight - that is, average compared with other apples - whereas the orange is perhaps heavy, weighing several standard units (called standard deviations) above the average weight for oranges.

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