The standard deviation is the average distance of each score in a distribution from the:

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Quizplus · Accepted Answer

The standard deviation is a measure of how spread out the scores are in a distribution. It is calculated by first finding the difference between each score and the mean, squaring these differences, summing them, dividing by the number of scores, and then taking the square root. Therefore, the standard deviation is based on the mean, and represents the average distance of each score from the mean.

The Standard Deviation Is the Average Distance of Each Score