STATISTICS - Jamb Mathematics Past Questions and Answers

Question 121:

• JAMB 1986

The people in a city with a population of 0.9 million were grouped according to their ages. Use the diagram to determine the number of people in the 15 - 29 years group

A. 29 x 10⁴
B. 26 x 10⁴
C. 16 x 10⁴
D. 13 x 10⁴

Question 122:

• JAMB 1987

Taking the period of day light on a certain day to be from 5.30a.m to 7.00p.m. Calculate the angle of a pie chart designed to show the periods of the day light and of darkness on that day

A. 187^o30'
B. 172^o30'
C. 135^o225^o
D. 202^o30' 157^o 30'

Question 123:

• JAMB 1987

The goals scored by 40 football teams from three league divisions are recorded below
\(\begin{array}{c|c} \text{Number of goals} & 0 & 1 & 2 & 3 & 4 & 5 & 6 \\ \hline frequency & 4 & 3 & 15 & 16 & 1 & 0 & 1\end{array}\)
What is the total number of goals scored by all the terms?

A. 21
B. 40
C. 91
D. 96

Question 124:

• JAMB 1987

The numbers 3, 2, 8, 5, 7, 12, 9 and 14 are the marks scored by a group of students in a class test. If P is scored by an group of students in a class test. If P is the mean and Q the median, the P + Q is

A. 18
B. 17\(\frac{1}{2}\)
C. 16
D. 15

Question 125:

• JAMB 1987

Below are the scores of group of students in a music test
\(\begin{array}{c|c}scores & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \\ \hline \text{No, of students} & 3 & 6 & 10 & 8 & 6 & 5 & 2 & 4 & 12\end{array}\)
If CF(x) is the number of students with scores less than or equal to x, find CF(6)

A. 40
B. 38
C. 33
D. 5