Measures of Location - Jamb Mathematics Past Questions and Answers

Question 46:

• JAMB 1986

The table below gives the scores of a group of students in a Mathematical test.
\(\begin{array}{c|c} Scores & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 \\ \hline Frequency & 2 & 4 & 7 & 14 & 12 & 6 & 4 & 1\end{array}\)
If the mode in m and the number of students who scored 4 or less is s. What is (s, m)?

A. (27, 4)
B. (14,4)
C. (13,4)
D. (4,4)

Question 47:

• 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 48:

• JAMB 1988

\(\begin{array}{c|c} Scores(x) & 0 & 1 & 2 & 3 & 4 & 5 & 6 \\ \hline Frequency(f) & 7 & 11 & 6 & 7 & 7 & 5 & 3\end{array}\)
In the distribution above, the mode and median respectively are

A. 1,3
B. 1, 2
C. 3, 3
D. 0, 2

Question 49:

• JAMB 1988

If x and y represent the mean and the median respectively of the following set of numbers 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, find the \(\frac{x}{y}\) correct to one decimal place

A. 18
B. 15
C. 1.0
D. 5

Question 50:

• JAMB 1989

In a family of 21 people, the average age is 14years. If the age of the grandfather is not counted, the average age drops to 12 years. What is the age of the grandfather?

A. 35 years
B. 40 years
C. 42 years
D. 54 years