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【单选题】

Calculate the standard deviation of a task if O=4,P=10,M=6.
A.1.

B.1/3.
C.2/5.
D.2/3.
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79%的考友选择了A选项

1%的考友选择了B选项

6%的考友选择了C选项

14%的考友选择了D选项

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