Sociology: College Graduates What percentage of the general U.S. population have bachelor’s degrees? The Statistical Abstract of the United States, 120th Edition, gives the percentage of bachelor’s degrees by state. For convenience, the data are sorted in increasing order.

17 18 18 18 19 20 20 20 21 21 21 21 22 22 22 22 22 22 23 23 24 24 24 24 24 24 24 24 25 26 26 26 26 26 26 27 27 27 27 27 28 28 29 31 31 32 32 34 35 38

(a) Make a box-and-whisker plot and find the interquartile range.

(b) Illinois has a bachelor’s degree percentage rate of about 26%. Into what quartile does this rate fall?

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