The data in Table 4 represent the educational attainment in 1990 and 2013 of adults 25 years

Question:

The data in Table 4 represent the educational attainment in 1990 and 2013 of adults 25 years and older who are residents of the United States. The data are in thousands. So 39,344 represents 39,344,000.

(a) Draw a side-by-side relative frequency bar graph of the data.

(b) Make some general conclusions based on the graph.

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Approach First, determine the relative frequencies of each category for each year. To construct side-by-side bar graphs, draw two bars for each category of data, one for 1990, the other for 2013.

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