Waec Mathematics Past Questions and Answers

Question 1886:

• WAEC 1996

The number of goals scored by a football team in 20 matches is shown in the table above

What is the modal goal scored?

A. O
B. 1
C. 2
D. 5
E. 7

Question 1887:

• WAEC 1996

The cumulative frequency curve may be used to find the

A. Variance
B. Standard deviation
C. Mode
D. Median
E. Mean

Question 1888:

• WAEC 1996

The marks obtained by pupils of class are grouped as shown below; 0 - 4, 5 - 9,10 -14, 15 -19. Which of the following is/are not true? l. The mid values of the grouped marks are 2, 7, 12 and 17. II The class interval is 4. III The class boundaries are 0.5, 4.5, 9.5, 14.5 and 19.5

A. I only
B. II only
C. III only
D. I and II only
E. II and III only

Question 1889:

• WAEC 1996

What percentage of observation lie outside interquartile range of any distribution?

A. 12¹/₂%
B. 25%
C. 50%
D. 62¹/₂ %
E. 75%

Question 1890:

• WAEC 1996

A bag contains 3 red, 4 black and 5 green identical balls. Two balls are picked at random, one after the other without replacement. Find the probability that one is red and the other is green

A. 2/3
B. 5/11
C. 5/22
D. 5/24
E. 5/48