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【单选题】
关于两组呈正态分布的数值变量资料，但均数相差悬殊，若比较离散趋势，最好选用下列哪项指标A.
全距
B.
标准差
C.
方差
D.
四分位数间距
E.
变异系数
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】——Hey, can I ask you a favor? ----Sure, _______
A.
Here you are
B.
Just as I thought
C.
How is it going
D.
What can I do for you?
【简答题】List and describe the six elements of quality control. Who establishes the standards for quality control?
【单选题】Hey, Lorna! ____________. How are you these days?
A.
Long time no see
B.
You are welcome.
C.
Thank you.
D.
Can I help you
【单选题】---Hey,can I ask you a favor? ---Sure, ________.
A.
here you are
B.
just as I thought
C.
how is it going
D.
what can I do for you?
【单选题】James: Hey, how was the Italian restaurant you tried last night? Bill: It was wonderful.______
A.
They offer very cheap food.
B.
I highly recommend it.
C.
I bet I like it.
D.
They don't have seafood.
【简答题】quality
control system
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