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【多选题】
四分位距（）。A.
主要用于对顺序数据离散程度的测度。也用于数值型数据
B.
四分位距反映了中间50%数据的离散程度
C.
数值越小，说明中间的数据越分散
D.
可用于衡量中位数的代表性
E.
且不受极端值的影响。
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反馈参考答案：
举一反三
【单选题】The standard deviation of the sampling distribution of the sample mean is also called the:
A.
central limit theorem
B.
standard error of the mean
C.
finite population correction factor
D.
standard deviation
【判断题】The standard deviation of the sampling distribution of the sample mean is also called the central limit theorem.
A.
正确
B.
错误
【单选题】Which of the following characteristics of the magnetic compass does not limit its direction-finding ability?
A.
Deviation changes with ship’s position.
B.
Deviation changes with ship’s heading.
C.
It is sensitive to any magnetic disturbance.
D.
The magnetic properties also change with changes in the ship’s structure to magnetic cargo.
【判断题】Tolerance is the difference between the permitted minimum and maximum sizes of a part. It also equals the difference between the upper limit deviation and the lower limit deviation.
A.
正确
B.
错误
【简答题】The limit deviation of inter-operation dimensions could be marked based on the “ ”principle.
【单选题】Which of the following characteristics of the magnetic compass does not limit its direction-finding?
A.
Deviation change’s with ship’ s Position.
B.
Deviation changes with ship’s heading
C.
It is sensitive to any magnetic disturbance.
D.
The magnetic properties also change with changes in the ship’s structure or magnetic cargo.
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