This task is about reading information from a data table.
A scientist measured the height of 50 young kauri trees.
The table below shows how many of the trees were at different heights.
|
Height of Trees (cm) |
Number of Trees |
| 65 | 1 |
| 66 | 5 |
| 67 | 3 |
| 68 | 6 |
| 69 | 8 |
| 70 | 10 |
| 71 | 7 |
| 72 | 10 |
| TOTAL | 50 |
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a) |
How many kauri trees are: |
|
|
i) ii) iii) iv) |
exactly 66 cm tall? __________ more than 70 cm tall? __________ less than or equal to 68 cm tall? __________ less than 71 cm, but more than 66 cm tall? __________ |
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| b) |
What percentage of kauri trees are:
|
|
|
i)
ii)
|
exactly 70 cm tall? __________ %
less than 69 cm, but more than 65 cm tall? __________ %
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