Statistics - Mathematics Jamb Past Questions and Answers

Question 31 :

• JAMB 2019

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

Find the mean of the data.


A. 3.26
B. 4.91
C. 6.57
D. 3.0

Question 32 :

• 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 33 :

• JAMB 2019

The marks scored by 30 students in a Mathematics test are recorded in the table below:

Scores (Mark)	0	1	2	3	4	5
No of students	4	3	7	8	6	2

What is the total number of marks scored by the children?


A. 82
B. 15
C. 63
D. 75

Question 34 :

• 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 35 :

• 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