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In your course project, you will notice the following paragraph, “On February 12, 2012, Peg Jones, vice president for operations and maintenance, was called into Stephen’s office and asked to study the issue. Specifically, Stephen wanted to know whether the average fleet age was correlated to direct airframe maintenance costs and whether there was a relationship between average fleet age and direct engine maintenance costs. Peg was to report back by February 26 with the answer, along with quantitative and graphical descriptions of the relationship”.
Stephen is giving you a hint here as to which variable is dependent and which variable is independent or the predictor variable. Make sure you find out which variable (x or y) is the dependent variable so you can set up your regression tables correctly for your project this week. Tip: x is independent in Excel.