1.6 Sulfur dioxide is one of the major components of the AQI that measures air quality. Table below gives the sulfur dioxide estimates (in short tons)

for years 1980 and 2000 (National Air Quality and Emissions Trends Report, http://www.epa

.gov/airtrends).

a Produce and compare the Pareto charts of source categories for years 1980 and 2000.
b Identify important contributors of sulfur dioxide emission.

Transcribed Image Text:

SO Source 1980 2000 Fuel Combustion Electrical Utilities 16.073 11.389 Industrial 2.951 2.894 Other 0.971 0.593 Industrial processes 3.807 1.498 Transportation 0.697 1.805 Total 25.905 18.201