STATISTICS - Jamb Mathematics Past Questions and Answers

Question 246:

• JAMB 2005

The table above shows that the scores of a group of students in a test. If the average score is 3.5, find the value of x

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

Question 247:

• JAMB 2005

The model height and range of heights 1.35, 1.25, 1.35, 1.40, 1.35, 1.50, 1.35, 1.50, and 1.20 are m and r respectively. Find m+2r.

A. 1.35
B. 1.65
C. 1.95
D. 3.00

Question 248:

• JAMB 2005

Find the value of t if the standard deviation of 2t, 3t, 4t, 5t, and 6t is √2

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

Question 249:

• JAMB 2005

In how many ways can 6coloured chalks be arranged if 2 are same colour?

A. 60
B. 120
C. 240
D. 360

Question 250:

• JAMB 2005

How many possible ways are there of seating seven people P,Q,R,S,T,U and V at a circular table

A. 360
B. 720
C. 2520
D. 5040