北京大学教师如何做研究中国大学MOOC答案100分第一( 七 ) _样本容量

专注于假设可能会妨碍对其他可能对研究很重要的现象的关注。例如，研究假设是关于翻转课堂对学生动机的影响，因为过分关注动机可能会忽略翻转课堂对学生性别类型的影响。
4、选择题：
?类别变量不代表程度或数量的变化，而是质的差异。因此，以下变量是分类变量：?
A：阅读成绩
B：行为的攻击性
C：学习方式
D：奖励
答案：学习方式；
奖励
5、多项选择：
?Mr. Zhang (31 years old) is a young. Shefor a class. Theclass is everyand. There are 30and 12 girls in this class. Mr. Chen (54 years old) is anmale . Hein class 2, the first class in theof everyand . There are 40and 16 boys in this class. The twousedto teach, and the testwereat the end of the term.me, this studysomethat have not been , which maythe. Which of theare:?
A: class size
B:
C:
D:Final
: Class Size;
of
6、- :
?are thosewhose value range can be,in . , theare: ?
A:
B: Study
C:Type
D:
:;
7、True/False :
? we want to know about agroup of(theterm is ""), from which a smallof( term "") will be found for study.a study'sareon how(how ) theis to that wider . ?
答：是的
B: False
答案：是的
8、True or False:
?Athemathandin . He has " math " as theand " in " as the, right? ?
答：是的
B: False
答案：错误
9、True or False:
?Thethatcan draw aisto the size of the. For , theof 2%-3% of the total is too . Asizebe thethat thecanwithtime and . ?
答：是的
B: False
答案：是的
10、True/False:
?When, whentheof, be sure to look : who is theof the(for , 10% of the first gradein Model A), the totalofin thecan be(All the first-gradeof the Model A, and theto which thecan be ) who is to judgethecan beto their own(the first-gradeof the rural B). ?
答：是的
B: False
答案：是的
11、True or False:
?Theof theis not the same as theof the .is morewith theof the . ?
答：是的
B: False
答案：是的
12、True or False:
?must be morethan non- . ?
答：是的
B: False
答案：错误
13、True or False:
?Whenare not , theofcan bebythe study. ?
答：是的
B: False
答案：是的
14、True or False:
?Thethe , the morethehas toto a . ?
答：是的
B: False
答案：错误
15、True or False:
?,are used todata so as not tothe . For , 'sinand othercan beby theofin theirof Santa Claus or other . .can be used as ato /toorbydata . ?
答：是的
B: False
答案：是的
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北京大学 教师如何做研究中国大学MOOC答案100分第一( 七 )

北京大学教师如何做研究中国大学MOOC答案100分第一( 七 )