A large oil company is studying the number of gallons of gasoline purchased per customer at self-service pumps. The mean number of litres is 10.0 with a standard deviation of 3.0 litres. The median is 10.75 litres. What is the Pearson's coefficient of skewness?
A) - 1.00
B) - 0.75
C) + 0.75
D) + 1.00

Question

Quizplus · Accepted Answer

Pearson's coefficient of skewness is calculated as 3*(Mean - Median)/Standard Deviation. Here, it is 3*(10.0 - 10.75)/3.0 = -0.75.

A Large Oil Company Is Studying the Number of Gallons