Shaun Connor,Human Resources Manager forAmerican Oil Terminals (AOT),is reviewing the operator training hours at AOT nationally. His staff compiled the following table of national statistics on operators training hours. What can Shaun conclude from these statistics?
A) The East Coast distribution is skewed to the left.
B) The East Coast distribution is skewed to the right.
C) The West Coast distribution is skewed to the left.
D) The West Coast distribution is skewed to the right.
E) Both distributions are symmetrical.

Question

Shaun Connor,Human Resources Manager forAmerican Oil Terminals (AOT),is reviewing the operator training hours at AOT nationally. His staff compiled the following table of national statistics on operators training hours.  What can Shaun conclude from these statistics?
A) The East Coast distribution is skewed to the left. 
B) The East Coast distribution is skewed to the right. 
C) The West Coast distribution is skewed to the left. 
D) The West Coast distribution is skewed to the right. 
E) Both distributions are symmetrical.

Quizplus · Accepted Answer

The East Coast distribution is skewed to the right, as the mean (856 hours) is greater than the median (825 hours), and the right tail of the box plot is longer than the left tail. The West Coast distribution appears to be approximately symmetrical, as the mean (830 hours) is very close to the median (832 hours) and the box plot is symmetrical.

Shaun Connor,Human Resources Manager ForAmerican Oil Terminals (AOT),is Reviewing the Operator