In the Context of a Controlled Experiment,consider the Simple Linear

question 34

Multiple Choice

In the context of a controlled experiment,consider the simple linear regression formulation Yi = β0 + β1Xi + ui.Let the Yi be the outcome,Xi the treatment level when the treatment is binary,and ui contain all the additional determinants of the outcome.Then calling a differences estimator

• A)makes sense since it is the difference between the sample average outcome of the treatment group and the sample average outcome of the control group.
• B)and the level estimator is standard terminology in randomized controlled experiments.
• C)does not make sense,since neither Y nor X are in differences.
• D)is not quite accurate since it is actually the derivative of Y on X.

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