Lecture 6 Notes. Note: I will e-mail homework 2 tonight. It will be due next Thursday. The Multiple Linear Regression model (Chapter 4.1) Inferences from multiple regression analysis (Chapter 4.2)
(1) Which characteristics of the design are likely to affect mileage?
(2) A new car is planned to have the following characteristics: weight – 4000 lbs, horsepower – 200, cargo – 18 cubic feet, seating – 5 adults. Predict the new car’s gas mileage.
Degrees of freedom for t equals n-(K+1). Standard error of , , found on JMP output.
Decision rule for test: Reject H0 if or
p-value for testing is printed in JMP output under Prob>|t|.
Multiple regression provides a better picture of the benefits of
an irrigation scheme because temperature would be held fixed in
an irrigation scheme.