STATISTICS - Jamb Mathematics Past Questions and Answers

Question 231:

• JAMB 2003

A bag contains 5 blacks balls and 3 red balls. Two balls are picked at random without replacement. What is the probability that a black and red balls are picked?

A. 15/28
B. 13/28
C. 5/14
D. 3/14

Question 232:

• JAMB 2003

The result of tossing a fair die 120 times is summarized above. Find the value of x

A. 19
B. 20
C. 21
D. 22

Question 233:

• JAMB 2003

The histogram above shows the ages of the victims of a pollution. How many people were involved in the pollution?

A. 15
B. 18
C. 20
D. 21

Question 234:

• JAMB 2004

Some white balls put in a basket containing twelve red balls and sixteen black balls. If the probability of picking a white balls from the baskets is 3/7, how many white balls were introduced?

A. 12
B. 21
C. 28
D. 32

Question 235:

• JAMB 2004

find the mean deviation of 1, 2, 3 and 4

A. 2.5
B. 2.0
C. 1.0
D. 1.5