STATISTICS - Jamb Mathematics Past Questions and Answers

Question 96:

• JAMB 1983

The scores of 16 students in a Mathematics test are 65, 65, 55, 60, 60, 65, 60, 70, 75, 70, 65, 70, 60, 65, 65, 70. What is the sum of the median and modal scores?

A. 125
B. 130
C. 140
D. 150
E. 137.5

Question 97:

• JAMB 1983

The letters of the word MATRICULATION are cut and put into a box. One letter is drawn at random from the box. Find the probability of drawing a vowel

A. \(\frac{7}{13}\)
B. \(\frac{5}{13}\)
C. \(\frac{6}{13}\)
D. \(\frac{8}{13}\)
E. \(\frac{4}{13}\)

Question 98:

• JAMB 1983

In a sample survey of a University Community, the following table shows the percentage distribution of the number of members per house hold
\(\begin{array}{c|c} \text{No. of members per household} & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & \text{Total} \\ \hline \text{No. of households} & 3 & 12 & 15 & 28 & 21 & 10 & 7 & 4 & 100\end{array}\)
What is the median?

A. 4
B. 3
C. 5
D. 4.5
E. None

Question 99:

• JAMB 1983

Find the mean of the following 24.57, 25.63, 24.32, 26.01, 25.77

A. 25.12
B. 25.30
C. 25.26
D. 25.50
E. 25.75

Question 100:

• JAMB 1983

In a class of 60 pupils, the statistical distribution of the numbers of pupils offering Biology, History, French, Geography and Additional mathematics is as shown in the pie chart. How many pupils offer Additional Mathematics?

A. 15
B. 10
C. 18
D. 12
E. 20