STATISTICS - Jamb Mathematics Past Questions and Answers

Question 286:

• JAMB 2009

5, 8, 6 and k occur with frequency 3, 2, 4, and 1 respectively an d have a mean of 5.7. Find the value of k

A. 4
B. 3
C. 2
D. 1

Question 287:

• JAMB 2009

What is the mean deviation of x, 2x, x+1 and 3x. If their mean is 2?

A. 0.5
B. 1.0
C. 1.5
D. 2.0

Question 288:

• JAMB 2009

In how many ways can a delegation of 3 be chosen from 5 men and 3 women. If at least 1 man and 1 woman must be included?

A. 15
B. 28
C. 30
D. 45

Question 289:

• JAMB 2009

In how many ways can 9 people be seated if 3 chairs are available

A. 720
B. 504
C. 336
D. 210

Question 290:

• JAMB 2009

Marks	2	3	4	5	6	7	8	9
No. of students	3	4	1	0	4	5	2	1

The table above shows the distribution of marks of students in a test. Find the probability of passing the test if the pass mark is 5


A. 3

5

B. 2

5

C. 7

20

D. 1

5