The data set below has a lower quartile of 13 and an upper quartile of 37.1, 12, 13, 15, 18, 20, 35, 37, 40, 78Which statement is true about any outliers of the data set?

The interquartile range is 37 − 13 = 24. Using the 1.5 × IQR rule, the outlier boundaries are 13 − 36 = −23 and 37 + 36 = 73. The value 78 is above 73, while 1 is above −23, so 78 is the only outlier. The correct choice is “The greatest value, 78, is the only outlier.”

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