A statewide survey released by the University of Iowa Injury Prevention Research Center was designed to assess compliance with Iowa seatbelt law.The table at right shows the results for 5 Iowa cities. compared for the different cities. 
observe in your bar chart for part (a).
Definitions:
GNI
Gross National Income, the total domestic and foreign output claimed by residents of a country, including wages, salaries, and investment income, less equivalent payments to non-residents.
United States
A North American nation, renowned for its considerable global impact on economic, political, and cultural affairs.
Developing Countries
Nations with lower levels of industrialization, underdeveloped economic infrastructure, and lower living standards.
Low-Income Countries
Nations with a gross national income (GNI) per capita below a specific threshold set by international organizations.
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