What Object from the First Stage Regression (Of Two-Stage Least

question 21

Multiple Choice

What object from the first stage regression (of two-stage least squares) is critical to incorporate in your implementation of the second stage regression?

• A) The estimated coefficient for the treatment variable from the first stage.
• B) The estimated residuals for the treatment variable from the first stage.
• C) The estimated predictions for the endogenous variable from the first stage.
• D) The estimated residuals for the endogenous variable from the first stage.

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