Lunch-spending histogram and proportional bars
Lunch-spending histogram and proportional bars
Secondary 2
6 marks
TGM Original Questions
Lunch spending of 400 pupils is grouped as follows.
| Spending \(E\) (cents) | Frequency |
|---|---|
| \(0\le E<100\) | \(80\) |
| \(100\le E<200\) | \(140\) |
| \(200\le E<300\) | \(120\) |
| \(300\le E<400\) | \(60\) |
- Draw a histogram.[3]
- Find the percentage spending at least $2.[2]
- If the rectangle for \(200\le E<300\) is 24 cm high in a scaled drawing, find the height for \(300\le E<400\).[1]
Solution:
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Answer:(a) bars 80, 140, 120, 60 (b) \(45\%\) (c) \(12\) cm.
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