Question

Question 1: What is a control variable in a regression model?

1) the "cause variable" of interest in a study

2) the coefficient on a regressor

3) the dependent variable

4) a regressor included to eliminate omitted variable bias

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Question 2: What is the base specification in a regression analysis?

1) the simplest specification that includes only one regressor

2) the regression including only control variables as regressors

3) the most complex regression specification you can think of

4) the regression including a core set of regressors, including the variables of primary interest and control variables suggested by theory and/or expert judgement

Answer 1

1)

Option(2) is the answer.

Reason:

A control variable in a regression model is the coefficient on a regressor.

Therefore, the coefficient on a regressor is the answer.

2)

Option(4) is the answer.

Reason:

The base specification in a regression analys is:

he regression including a core set of regressors, including the variables of primary interest and control variables suggested by theory and/or expert judgemen.

Therefore, Option(4) is the answer.