Given the least squares regression equation 28809X 10214 w

Given the least squares regression equation, = 2.8809X - 1.0214, where X=age of a Ponderosa Pine tree, and Y=height of the tree; how tall would we estimate an 18 year old tree to be?

Would it be?

a. 50.84 Ft

b. Cannot be determined

c.15.50 FT

d. 180.0 FT

e. 52.88FT

Solution

Y = 2.8809 X - 1.0214

X=18

Y= 2.8809*18 - 1.0214

Y= 50.8348

ANSWER

a. 50.84 Ft