Standard deviation is the
A) average score within a group of scores.
B) average amount that each score falls above or below the mean.
C) value in a group of scores that occurs most often.
D) difference between the largest and smallest values in a group of scores.

Question

Quizplus · Accepted Answer

Standard deviation measures the spread of a set of data from its mean. It is calculated by finding the difference between each data point and the mean, squaring those differences, adding them up, dividing by the number of data points, and then taking the square root. Therefore, option B is the correct answer as it refers to the average amount of each score's deviation from the mean.

Standard Deviation Is the