Top credit card issuers, by region. The Nilson Report (December 2015) published a list of the top 150 credit card issuers worldwide. The issuers (e.g., American Express, MasterCard, Visa) were ranked based on outstanding debt during the year. The table gives a breakdown of the regions in the world served by the top 150 credit card issuers.

a. One of the top 150 credit card issuers is selected at random, and the region it serves is determined. What type of data (quantitative or qualitative) is measured?
b. For each region in the table, calculate the percentage of the 150 top credit card issuers that fall into that region.
c. Use the percentages, part b, to construct a relative frequency bar graph for the data summarized in the table.
d. Based on the bar graph, make a statement about the regions that most of the top 150 credit card users serve.

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Number of credit Worldwide Region card issuers Asia-Pacific Canada 48 10 Europe Latin America 34 29 3 Middle East/Africa United States 26 Total 150