皮皮学，免费搜题
登录
搜题
【判断题】
钢筋混凝土构件中采用钢筋后,因受压混凝土先破坏而不能充分利用。A.
正确
B.
错误
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Which one of the following statements is true?
A.
Secondary data are data collected especially for a specific purpose
B.
If a sample is selected using random sampling, it will be free from bias
C.
In cluster sampling there is very little potential for bias
D.
Discrete data can take on any value
【判断题】The main purpose of probing during fieldwork is to ensure that fieldworkers strictly follow the sampling plan rather than select samples based on their own convenience.
A.
正确
B.
错误
【单选题】Once you have a well-defined purpose for your study and a clear description of the kinds of outcomes you want to achieve, the next step in your research design is
A.
population and sampling.
B.
choice of research method.
C.
conceptualization.
D.
operationalization.
E.
conducting a literature review
【简答题】函数功能:用冒泡法对数组a 进行由小到大的排序。 #include void fun(int a[],int n) { int i,j,t; /***********SPACE***********/ for (j=0;【?】;j++) /***********SPACE***********/ for (i=0;【?】;i++) /***********SPACE***********/ if...
【多选题】Regarding data reduction, which of the following are true?
A.
The purpose of data reduction is to reduce the data mining time.
B.
Attribute subset selection is an approach of dimensionality reduction.
C.
Data reduction techniques use a smaller dataset to replace the original dataset.
D.
Sampling is a data reduction technique.
【简答题】何园清代楠木厅叫什么名字?典出哪里?体现了园主人什么思想?
【单选题】________ is the testing of the questionnaire on a small sample of respondents for the purpose of improving the questionnaire by identifying and eliminating potential problems before using it in the ac...
A.
Precoding
B.
Pretesting
C.
Sampling
D.
Encoding
E.
Consolidation
相关题目：
参考解析：
知识点：
题目纠错 0
发布
