Statistics - Mathematics Jamb Past Questions and Answers

Question 46 :

• JAMB 2016

The bar chart above shows the number of visitors received in a week.

How many visitors were received on Friday, Tuesday and Sunday?

A. 17
B. 22
C. 20
D. 16

Question 47 :

• JAMB 2016

\(\begin{array}{c|c}
Marks & 2 & 3 & 4 \\
\hline
Frequency & 4 & 4 & y
\end{array}\)
The table above shows the frequency distribution of marks obtained by a group of students. If the total mark is 48, find the value of y.

A. 6
B. 8
C. 7
D. 5

Question 48 :

• JAMB 2016

\(\begin{array}{c|c}
Scores & 3 & 6 & 5 & 2 \\
\hline
Frequency & 2 & 3 & 4 & 6
\end{array}\)
From the table above, find the median

A. 3
B. 5
C. 4
D. 6

Question 49 :

• JAMB 2016

The mean of 2-t, 4+t, 3-2t, 2+t and t-1 is

A. 2
B. T
C. -t
D. -2

Question 50 :

• JAMB 2016

Find the mean of 10, 8, 5, 11, 12, 9, 6, 3, 15, and 23.

A. 11.2
B. 10
C. 10.2
D. 11.3