Nodel Construction wants to see the impact of a second independent variable, interest rates, on its sales.

APPROACH c The new multiple regression line for Nodel Construction, calculated by computer software, is:

We also find that the new coefficient of correlation is .96, implying the inclusion of the variable x2, interest rates, adds even more strength to the linear relationship

Transcribed Image Text:

1.80+30x - 5.0x2