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Graphing Practice Problem #7
| Age of the tree in years |
Average thickness of the annual rings in cm.
Forest A |
Average thickness of the annual rings in cm.
Forest B |
| 10 | 2.0 | 2.2 |
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| 20 | 2.2 | 2.5 |
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| 30 | 3.5 | 3.6 |
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| 35 | 3.0 | 3.8 |
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| 50 | 4.5 | 4.0 |
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| 60 | 4.3 | 4.5 |
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- The thickness of the annual rings indicate what type of environmental situation was occurring at the time of its development. A thin ring, usually indicates a rough period of development. Lack of water, forest fires, or a major insect infestation. On the other hand, a thick ring indicates just the opposite.
- Make a line graph of the data.
- What is the dependent variable?
- What is the independent variable?
- What was the average thickness of the annual rings of 40 year old trees in Forest A?
- Based on this data, what can you conclude about Forest A and Forest B?
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