The sum of the squared deviations around the mean for a distribution of 10 scores is 1000.The standard deviation
A)is 10.
B)is 100.
C)is 1.
D)can't be determined from this information.

Question

Quizplus · Accepted Answer

The standard deviation is the square root of the variance. The variance is the sum of squared deviations divided by the number of scores, which is 1000/10 = 100. The standard deviation is the square root of 100, which is 10.

The Sum of the Squared Deviations Around the Mean for a Distribution