Use the following information to answer questions 10-14.
To estimate ages of trees, forest rangers use a linear model that relates
tree diameter to age. The model is useful because tree diameter is
much easier to measure than the tree age. Use the data in the table
collected for a certain variety of oaks to answer the following questions.
What is the linear regression (line of best fit) for the data?
10.
A. y = 2.97x - 7.98
B. y = 6.45x - 0.15
C. y = 7.12x + 0.15
D. y=8.49x+7.98
Diameter (in.)
2.5
Age (years)
15
4.0
24
6.0
32
8.0
56
9.0
49
9.5
76
12.5
90
15.5
89