Question

Help! Will Fan + Medal!

Answer 1

A linear model for a set of data was y = -20.6 + 9.72 x and produced the following residual plot. [Xscl = 1, Yscl = 5]

a) Predict the value of y when x = 7.5.
b) Determine the residual if x = 5.

Answer 2

a) When x=7.5, y=-20.6+9.72(7.5)=-20.6+72.9 = 52.3

I figured out A. already.

Answer 3

I'm sorry. I can't figure it out either. 😰

Answer 4

A medal for your troubles, madam.