题目内容

Which of the following is true of dependent variables?

A dependent variable can only have a numerical value.
B. A dependent variable cannot have more than 2 values.
C. A dependent variable can be binary.
D. A dependent variable cannot have a qualitative meaning.

查看答案
更多问题

The dummy variable coefficient for a particular group represents the estimated difference in intercepts between that group and the base group.

A. 对
B. 错

A problem that often arises in policy and program evaluation is that individuals (or firms or cities) choose whether or not to participate in certain behaviors or programs.

A. 对
B. 错

以下不属于Internet常用的服务为()

A. E-mail
B. FTP
C. office
D. BBS

URL常用协议包括FILE、telent、FTP和()

A. HTTP
B. site
C. www
D. net

答案查题题库