David Savageau and Geoffrey Loftus, the authors of Places Rated Almanac (published in 1997 by Macmillan) have ranked 325 metropolitan areas in the United States with consideration of the following aspects of life in each area: cost of living, transportation, jobs, education, climate, crime, arts, health, and recreation. The data are in the file P2_55.XLS. Use multiple regression analysis to explore the relationship between the metropolitan area’s overall score and the set of aforementioned numerical factors. Which explanatory variables should be included in a final version of this regression model? Justify your choices