What is the relationship between the price of crude oil and the price you pay at the pump for gasoline? The file "Oil and Gasoline", which is posted as a separate item in this week's content folder, contains the price ($) for a barrel of crude oil and a gallon of gasoline for 231 weeks ending May 30, 2014.

Using Excel create a simple linear regression to predict the price of a gallon of gasoline using the price of a barrel of crude oil as the independent variable.

What is the numeric value of the slope (b₁) of this model?.