David Desreumaux, VP of Human Resources of Maritime Boat Manufacturing (MBM), is reviewing the employee training programs of MBM factories.His staff reports several statistics for safety training hours.The mean is 20 hours, the standard deviation is 5 hours, the median is 15 hours, and mode is 10 hours.The Pearsonian coefficient of skewness for safety training hours is ___.
A)6
B)1
C)3
D)4
E)0

Question

Quizplus · Accepted Answer

The Pearsonian coefficient of skewness formula is (mean  - mode) / standard deviation. Plugging in the given values, we get (20-10) / 5 = 2. Therefore, the coefficient of skewness is 2 * (1.5) = 3.