Variance, standard deviation, range and their applications - Jamb Economics Past Questions and Answers

Question 1:

• JAMB 2019

A demand which gives rise to the reverse of the law of demand is__________

A. Derived demand
B. Joint demand
C. Abnormal demand
D. Composite demand

Question 2:

• JAMB 2019

If the standard deviation of a given data is 8.2, find its variance_______________

A. 82.0
B. 91.8
C. 67.2
D. 4.1

Question 3:

• JAMB 2017

a formula used to calculate for ____________

A. Variance
B. The quartile
C. Standard deviation
D. Mean deviation

Question 4:

• JAMB 2016

Given 0.25, 1.25, 1.80, 1.110, 10.20, 10.15 and 1.55.
Determine the range?

A. 0.25
B. 10.00
C. 1.55
D. 9.95

Question 5:

• JAMB 2015

Find the range in the following data 9, 15, 6, 20, 24, 18, 12, 8, 20, 10, 5.

A. 24
B. 5
C. 19
D. 12