Compute the IQR for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22
a. 6.25 b. 7.75
c. 5.14 d. 9.50
d
RATIONALE: The difference between the third and first quartiles is often referred to as the interquartile range, or IQR. IQR = 21.25 – 11.75 = 9.50.
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