题目内容

A binary variable is often called a

A. dummy variable.
B. dependent variable.
C. residual.
D. power of a test.

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Which of the following is true of dummy variables?

A dummy variable always takes a value less than 1.
B. A dummy variable always takes a value higher than 1.
C. A dummy variable takes a value of 0 or 1.
D. A dummy variable takes a value of 1 or 10.

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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.

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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

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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

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A binary variable is often called a

A. dummy variable. B. dependent variable. C. residual. D. power of a test.

Which of the following is true of dummy variables?

Which of the following is true of dependent variables?

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

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. dummy variable.
B. dependent variable.
C. residual.
D. power of a test.