Question

Us the regression equation, y= 4.39x-6.77, to predict the age of a tree that is 125 cm in diameter

Answer 1

y = 542 years

Explanation:

Given that,

The regression equation, y= 4.39x-6.77 is used to predict the age of a tree.

y is age of a tree and x is diameter

Put x = 125 cm

Put the value of x in above equation.

y = 4.39(125)-6.77

=548.75 - 6.77

= 541.98

or

y = 542

So, the tree is 542 years old.