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What percentage of the general U.S. population are high-school dropouts? The Statistical Abstract of the United States, 120th Edition, gives the percentage of high-school dropouts by state. For convenience, the data are sorted in increasing order.
5 6 7 7 7 7 8 8 8 8
8 9 9 9 9 9 9 9 10 10
10 10 10 10 10 10 11 11 11 11
11 11 11 11 12 12 12 12 13 13
13 13 13 13 14 14 14 14 14 15
(a) Select the box-and whisker plot.
(b) Find the interquartile range.
IQR =
(c) Wyoming has a dropout rate of about 7%. Into what quartile does this rate fall?
Q1
between Q1 and the median
Q3
above Q3
