Mich4inbiNarielenda
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If there are 13 values in a data set in order from smallest to largest, what is the third quartile of the data set?

AThe mean of the 10th and 11th values
BThe mean of the 8th and 9th values
CThe mean of the 7th and 8th values
DThe mean of the 9th and 10th values

Verified Answer :

nobillionaireNobley

Third quatile position is given by: Q3 position = 3/4 (N) where N is the number of data set.
Q3 position = 3/4 ^ 13 = 9.75 (i.e. between the 9th and 10th values)

Answer: D [The mean of the 9th and 10th values]

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