The graph above depicts the performance ratings of two sports teams A and B in five different seasons
In the last five seasons, what was the difference in the average performance ratings between Team B and Team A?
Attached Figure / Diagram
A
1.2
B
6.4
C
4.6
D
1.8
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Average performance rating of Team B = \(\frac{7+9+1+9+6}{5} = \frac{32}{5}\) = 6.4
Average performance rating of Team A = \(\frac{5+3+6+10+2}{5} = \frac{26}{5}\) = 5.2
∴ The difference in the average performance ratings between Team B and Team A = 6.4 - 5.2 = 1.2
Source: WAEC / JAMB / NECO Classroom Archive (Record #67371)