Question

True or False:

1) ____ In Sharp Regression Discontinuity Designs (RDD) it is assumed that the mechanism or rule driving treatment assignment is unobserved by the researcher.

2) ____ Weak instruments can inflate standard errors produced by IV but they do not induce finite sample bias.

3) ____ Purely descriptive research can be used to identify cause and effect relations.

4) ____ The residuals produced by a regression are sometimes correlated with one or more explanatory variables

Answer 1

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