Measures of Dispersion - Jamb Mathematics Past Questions and Answers

Question 31:

• JAMB 2003

The range of 4, 3, 11, 9, 6, 15, 19, 23, 27, 24,21 and 16 is

A. 16
B. 21
C. 23
D. 24

Question 32:

• JAMB 2004

find the mean deviation of 1, 2, 3 and 4

A. 2.5
B. 2.0
C. 1.0
D. 1.5

Question 33:

• JAMB 2004

The weight of 10 pupils in a class are 15 kg, 16 kg, 17 kg, 18 kg, 16 kg, 17 kg, 17 kg, 17 kg, 18 kg, and 16 kg. What is the range of this distribution?

A. 4
B. 3
C. 1
D. 2

Question 34:

• JAMB 2005

Find the value of t if the standard deviation of 2t, 3t, 4t, 5t, and 6t is √2

A. 1
B. 2
C. 3
D. 4

Question 35:

• JAMB 2006

Find the variance of 2x, 2x-1 and 2x+1

A. 2/3
B. 2
C. √(2/3)
D. 1