The American Chamber of Commerce Researchers Association compiles cost-of-living indexes for selected metropolitan areas. Shown here are cost-of-living indexes for 25 different cities on five different items for a recent year. Use the data to develop a regression model to predict the grocery cost-of-living index by the indexes of housing, utilities, transportation, and healthcare. Discuss the results, highlighting both the significant and non-significantpredictors.

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Transpor- Items Housing Utilities tation Healthcare Albany Albuquerque 96.3 105.2 98.8 100.9 Augusta, GA 96.2 Austin Baltimore Buffalo Colorado 108.3 106.8 127.4 107.5 88.8 115.6 102.3 94.0 98.0 106.0 114.1 108.1 103. 117.3 127.6 107.8 100.8 102.4 Dallas Denver Des Moines El Paso Indianapolis 96.0 Jacksonville 96.1 Kansas City 89.8 Knoxville Los Angeles 103.3 21.3 Louisville Memphis Miami Minneapolis Mobile Nashville New Orleans 104.0 Oklahoma 106.8 114.3 105.4 98.9 108.9 110.0 97.2 105.9 95.11.4 105.7 104.2 92. 102.7 106.0 108.3 102.9 90.4 96.0 75.6 102.1 102.4 91.101.1 100.3 123.0 125.6 104.3 106.0 8104.9 102.8 82.3 128.5 88.4 85.5 137.8 107.5 79.4 86.2 92.8 112.3 105.2 95.8 107.7 90.9 83.4 122.2 79.4103.4 City Phoenix 96.3 104.6 2