Mean deviation - Jamb Mathematics Past Questions and Answers

Question 1:

• JAMB 2019

This table below gives the scores of a group of students in a Further Mathematics Test.

Score	1	2	3	4	5	6	7
Frequency	4	6	8	4	10	6	2

Calculate the mean deviation for the distribution

A. 4.32
B. 2.81
C. 1.51
D. 3.90

Question 2:

• JAMB 2019

This table below gives the scores of a group of students in a Further Mathematics Test.

Score	1	2	3	4	5	6	7
Frequency	4	6	8	4	10	6	2

Calculate the mean deviation for the distribution

A. 4.32
B. 2.81
C. 1.51
D. 3.90

Question 3:

• JAMB 1994

Find the mean deviation of the set of numbers 4, 5, 9

A. Zero
B. 2
C. 5
D. 6

Question 4:

• JAMB 2000

If the mean of the numbers 0, (x+2), (3x+6), and (4x+8) is 4, find their mean deviation.

B. 2
C. 3
D. 4

Question 5:

• JAMB 2002

Calculate the mean deviation of the set of numbers 7, 3, 14, 9, 7, and 8.

A. 13/6
B. 5/2
C. 7/6
D. 7/3