2.28 The the percentage of in the United States, organized by type of appliance in a :
Type of Appliance Percentage (%) Air conditioning 18 Clothes dryers 5 Clothes washers/other 24 Computers 1 Cooking 2 Dishwashers 2 Freezers 2 Lighting 16 Refrigeration 9 Space heating 7 Water heating 8 TVs and set top : Data extracted from J. Mouawad, and K. Galbraith, Plugged-in Age Feeds a Hunger for Electricity, The , September 20, 2009, pp. 1, 28
a. Construct a bar chart, a pie chart, and a Pareto chart. b. Which graphical method do you think is best for portraying these data? c. What conclusions can you reach concerning residential electricity consumption in the United States?
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