ec-57 - 1 April 23, 2009 It is E370 Time! Announcements...

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April 23, 2009 It is E370 Time!!! Announcements Today’s Goals: You should be able to interpret regression output for a multiple regression. accurately interpret Adjusted R 2 . recover missing values from Excel regression output. Next Time~~Checking Assumptions Announcements Remember not to do any rounding of answers for Homework Manager until you are ready to insert your answer. Since many calculations are inter-related working them in an Excel spreadsheet is quite useful. Always TYPE your answers, do not copy and paste them. Data sets for the lab manual are found on the web site under “Labs and Lab Manual.” Click on the link “Data.” Output from a regression of number of cars sold on number of minutes of radio advertising, number of salespeople on the lot, and location of the dealership, where in the city limits =1 and out of city limits = 0. SUMMARY OUTPUT Regression Statistics Multiple R 0.96 R Square 0.93 Adj R Square 0.90 Standard Error 7.25 Observations 12 1. What does Multiple R coefficient mean? 2.
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ec-57 - 1 April 23, 2009 It is E370 Time! Announcements...

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