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【单选题】
用频率表计算平均数时各组的组中值A.
本组段变量值的平均数
B.
本组段变量值的中位数
C.
本组段的下限值
D.
（本组段上限值 + 本组段下限值） /2
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皮皮学刷刷变学霸
举一反三
【简答题】多尔把他设想的后现代课程标准概括为“4R”,即()()()()。
【简答题】Listen to the passage "How Pensions Work in the United States" and answer Question 12-15.
【简答题】为某一特定目的而专门组织的一次性全面调查,称为()。A. 普查B.抽样调查C.统计报表D.访问调查
【简答题】_______ answered the question "how do you get what you want using just the words?" in __________ written more than 2000 years before.
【单选题】The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the...
A.
a nominal scale variable.
B.
an ordinal scale variable.
C.
an interval scale variable.
D.
a ratio scale variable.
【单选题】Which of the following is NOT a good answer to the question, "How long will you be staying in the United States?"
A.
1 week
B.
10 days
C.
I have a one-year open ticket
D.
As long as I can
【多选题】多尔把他设想的后现代课程标准概括为“4R”,即:
A.
Regionalism(地域性)
B.
Richness(丰富性)
C.
Recursion(循环性)
D.
Relation(关联性)
E.
Rigor(严密性)
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