3
4
Background: the thickness or the annual rings indicates what type of environmental situation was occurring at the time
of the tree's development. A thin ring usually indicates a rough period of development such as lack of water, forest
fires, or insect infestation. On the other hand, a thick ring means a prosperous period of development
. Use the
information from the data table below to create a proper scientific graph and to answer the corresponding questions.
Average Thickness of Annual Rings
in Forest B (millimeters)
Age of Trees (in years)
Average Thickness of Annual Rings
in Forest A (millimeters)
10
10
20
24
20
24
28
30
30
35
35
34
38
50
41
45
45
0
60
46
51
1. What is the dependent variable? - the thickness of the rings
2. What is the independent variable? - The age of trees in years
3. What was the average thickness of annual rings for 40 year old trees in Forest A? 50
4. What is it called when you make predictions within given data, such as made in question #3?-interpolation
5. What was the mean thickness of annual rings for all trees found in Forest B?- 10
6. Based on the data shown, what can be concluded about the comparative health of Forest A & B?- There healthy
hetween the age of trees and the average