General Studies · Econometrics
Which of the following statements are correct regarding simultaneous equation models? I. Two-Stage Least Squares (2SLS) is consistent under over-identification. II. Indirect Least Squares (ILS) cannot be used for over-identified equations. III. Reduced-form coefficients are always identifiable. IV. OLS applied directly to a structural equation is biased if endogeneity exists. Select the correct option:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1I, II and IV only
- 2I and III only
- 3II and III only
- 4I, II, III and IV✓
Correct answer
I, II, III and IV
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