Linear Regression with Excel  Brief Tutorial for Forecasting Assignment MIT Airport Systems Planning Course Shiro Yamanaka.

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Linear Regression with Excel  Brief Tutorial for Forecasting Assignment MIT Airport Systems Planning Course Shiro Yamanaka

MIT Airports CourseRegression TutorialPage 2 Installation First, please make sure that you have Analysis ToolPak installed. To do so, go to: Tools... and select: Add-Ins…” If it is installed already, please skip to Page 4.

MIT Airports CourseRegression TutorialPage 3 Make sure that: Analysis ToolPak” is checked.

MIT Airports CourseRegression TutorialPage 4 Regression Now we can run the regression. Go to: Tools... and select: Data Analysis Assumption 5, Q1 is used as an example. The corresponding equation is: (PAX)/(2*(POP)) = A0 + A1*(PCPI) + A2*(EMP) + A3*(Yield)

MIT Airports CourseRegression TutorialPage 5 From the list, select: Regression...

MIT Airports CourseRegression TutorialPage 6 You are asked to specify the input data. “Y Range” refers to Dependent variables “X Range” refers to Independent variables For this analysis, we assume that PAX/(2*POP) is a function of PCPI, Employment, and Nat’l Avg Yield. So Column F is the Dependent variable, and Columns B-D are Independent variables. To specify the input range, click on this button to go to range specification screen. (Next page)

MIT Airports CourseRegression TutorialPage 7 Here, you can select the data set you want to include as the value of Dependent or Independent variables. (Have to be done one at a time.) For Dependent variables, all data sets must be in one column. For Independent variables, data sets can be in multiple columns, and they will be your “X Variable 1,2, … n” in the output worksheet. There must be the same number of data sets for Dependent and Independent variables. So please construct your table carefully. When you are done, click on this button to go back to Regression main screen.

MIT Airports CourseRegression TutorialPage 8 When you press: OK, the regression result will be shown on another worksheet. Statistics useful for our purpose are highlighted. This example shows, R^2 = 0.923, the coefficients for the 3 independent variables and the intercept. This turns the original equation into: (PAX)/(2*(POP)) = *(PCPI) (EMP) (YIELD)