Question

Least squares regression line is y=4x-8 what is the best predicted value for y given x =7?

Answer 1

We have a regression model to predict y from the value of x.

The equation of this regression line is:

`y=4x-8`

We then can calculate y for x = 7 as:

`y(7)=4(7)-8=28-8=20`

Answer: the predicted value of y when x = 7 is y(7) = 20