Representation of data - Jamb Mathematics Past Questions and Answers

Question 26:

• JAMB 1985

In a class of 120 students, 18 of them scored an A grade in mathematics. If the section representing the A grade students on a pie chart has angle Z^o at the centre of the circle, what is Z?

A. 15
B. 27
C. 50
D. 52
E. 54

Question 27:

• JAMB 1986

Of the nine hundred students admitted in a university in 1979, the following was the distribution by state: Anambrs 185, Imo 135, Kaduna 90, Kwara 110, Ondo 155, Oyo 225. In a pie chart drawn to represent this distribution, The angle subtended at the centre by anambra is

A. 50^o
B. 65^o
C. 74^o
D. 88^o

Question 28:

• 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 29:

• 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 30:

• 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