Mathematical Reasoning第 60 / 120 题
What is the median of the data set 7, 3, 9, 5, 11?
a.5
b.35
c.9
d.7
解析
First order the numbers: 3, 5, 7, 9, 11; the middle value is 7. The median is the center of an ordered list. With five values, the third number is the median.
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