A smart chart shows the rainfall (in cm) for five consecutive months: Jan – 8, Feb – 12, Mar – 9, Apr – 11, May – 10. What is the average rainfall for these five months?
Answer
10
The correct answer is 10 — Hence, the average rainfall is 10 cm.
Step-by-step solution
- Add all rainfall values: 8 + 12 + 9 + 11 + 10 = 50 cm.
- Count the number of months: 5.
- Divide the total rainfall by the number of months: 50 ÷ 5 = 10 cm.
- Hence, the average rainfall is 10 cm.
Common mistake: Dividing the total by the wrong number of months
Concept tested: Mean from smart chart data
Published · How this solution was prepared and checked
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