解析：Which of the following sets of numb_考试试题_GRE

【单选题】Which of the following sets of numbers has the greatest standard deviation
A、2, 3, 4
B、2.5, 3, 3.5
C、1, 1.25, 1.5
D、-2, 0, 2
E、-20, 21, 21.5

网考网参考答案：D
网考网解析：
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