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4.3 Exercise 18

Avg difficulty 2.5

A regression was run to determine whether there is a relationship between the diameter of a tree ( x x , in inches) and the tree’s age ( y y , in years). The results of the regression are given below. Use this to predict the age of a tree with diameter 10 inches.

y=ax+b a=6.301 b=−1.044 r=0.970 \begin{matrix}y = a x + b \\ a = 6.301 \\ b = −1.044 \\ r = 0.970\end{matrix}

OpenStax Algebra and Trigonometry 2e, 4.3 Fitting Linear Models to Data, exercise 18

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.