Find the mean of the distribution shown.

A) -1.89
B) -1.58
C) -2.10
D) 2.10

Question

Find the mean of the distribution shown.

A) -1.89 
B) -1.58 
C) -2.10 
D) 2.10

Quizplus · Accepted Answer

To find the mean, we need to add up all the values and divide by the total number of values. Using the frequency table, we can calculate that the sum of all the values is (-2.5*2)+(-2*4)+(-1*3)+(0*1)+(1*3)+(2*4)+(3*2) = -22. Then, we divide by the total number of values, which is 19. So the mean is -22/19 = -1.58. Therefore, the best choice is B.

Find the Mean of the Distribution Shown