Test Index

JAMB Mathematics 2023 Paper

Question : 52

Total: 80

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?

Solution:

Concept:

Average performance is the sum of the ratings divided by the number of seasons.

Explanation:

Team B ratings over the five seasons are

7, 9, 1, 9, 6

Average of Team B

= \frac{7+9+1+9+6}{5} = \frac{32}{5} = 6.4

Team A ratings over the five seasons are

5, 3, 6, 10, 2

Average of Team A

= \frac{5+3+6+10+2}{5} = \frac{26}{5} = 5.2

Difference in average ratings

= 6.4 - 5.2 = 1.2

Answer:

1.2

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