The U.S. Bureau of Labor Statistics produces consumer price indexes for several different categories. Shown here are the percentage changes in consumer price indexes over a period of 20 years for food, shelter, apparel, and fuel oil. Also displayed are the percentage changes in consumer price indexes for all commodities.
Use these data and multiple regressions to develop a model that attempts to predict all commodities by the other four variables. Comment on the result of thisanalysis.

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All Fuel Commodities Food Shelter Apparel Oil 1.0 2.0 3.7 2.7 2.6 2.6 2.1 2.4 4.4 7.2 6.0 6.7 6.6 6.2 3.3 4.0 9.3 1.6 1.2 4 1.6 1.2 2.2 5.0 1.9 3,0 3.6 4.5 8.3 8.9 4.2 4.6 4.7 9.6 9.9 5.5 6.6 10.2 13.9 2.6 3.5 4.7 4.5 3.6 3.0 7.4 11.9 8.8 4.3 5.8 7.2 11.3 3.5 5.1 5.7 3.1 4.2 14.5 14.3 8.5 3.0 6.3 9.9 11.0 2.5 4.1 5.3 5.8 4.2 3.2 2.0 3.7 7.4 4.5 3.7 4.5 3.6 4.3 12.0 9.5 9.6 8.4 9.2