STATISTICS - Jamb Mathematics Past Questions and Answers

Question 6:

• JAMB 2019

Score(x)	0	1	2	3	4	5	6
Freq(f)	5	7	3	7	11	6	7

Find the variance

A. 3.42
B. 4.69
C. 4.85
D. 3.72

Question 7:

• 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

Find the mode of the distribution.

A. 7
B. 10
C. 5
D. 4

Question 8:

• 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 9:

• JAMB 2019

Find the probability that a number selected at random from 21 to 34 is a multiple of 3

A. \(\frac{3}{11}\)
B. \(\frac{2}{9}\)
C. \(\frac{5}{14}\)
D. \(\frac{5}{13}\)

Question 10:

• JAMB 2019

In a committee of 5, which must be selected from 4 males and 3 females. In how many ways can the members be chosen if it were to include 2 females?

A. 144 ways
B. 15 ways
C. 185 ways
D. 12 ways