Data Set 4-3: -2, -1, 0, 2, 6
-Refer to Data Set 4-3. The standard deviation S is
A) 2.58
B) 2.83
C) 6.67
D) none of the above

Question

Quizplus · Accepted Answer

The standard deviation is calculated by finding the square root of the variance. The variance is the average of the squared differences from the mean. For this data set, the mean is 1, and the squared differences are 9, 4, 1, 1, and 25. The average of these squared differences is 8, and the square root of 8 is approximately 2.83.