Ten experts rated a newly developed chocolate chip cookie on a scale of 1 to 50. Their ratings were: 34, 35, 41, 28, 26, 29, 32, 36, 38 and 40. What is the mean deviation?
A) 8.00
B) 4.12
C) 12.67
D) 0.75
E) None of the choices are correct.

Question

Quizplus · Accepted Answer

The mean of the ratings is 33.9. The deviations from the mean are: 0.1, 1.1, 7.1, 5.9, 7.9, 4.9, 1.9, 2.1, 4.1, and 6.1. The mean deviation is the average of these absolute deviations, which is 4.12.

Ten Experts Rated a Newly Developed Chocolate Chip Cookie on a Scale