The following table indicates the percentage of residential electricity consumption in the United States, in a recent year organized by type of use
Type of Appliance __________Percentage
Cooking ................................. 4%
Cooling ................................. 9%
Electronics .............................. 6%
Heating ................................ 45%
Lighting ................................. 6%
Refrigeration ........................... 4%
Water heating ......................... 18%
Wet cleaning ........................... 3%
Other .................................... 5%
Source: Department of Energy
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?