Compute the third quartile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22
a. 21.25 b. 15.5
c. 21.5 d. 11.75
a
RATIONALE: Quartiles divide data into four parts, with each part containing approximately one-fourth, or 25 percent, of the observations. This can be calculated with the Excel function =QUARTILE.EXC(range,3) = 21.25.
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