If the five number summary for a set of data is 2, 5, 8, 9, and 18, then the mean of this set of data is
A) 10
B) 8
C) 7
D) there is insufficient information to calculate the mean

Question

Quizplus · Accepted Answer

The five number summary provides the minimum, first quartile, median, third quartile, and maximum, but it does not provide enough information to calculate the mean, as the actual data values are not known.

If the Five Number Summary for a Set of Data