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Questions › UGC-NET › UGC-NET 2025 › Q64
2 marksEconometrics › Endogeneity, instruments and simultaneous equations › Simultaneous equations: identification and estimationHardabout 2 min

UGC-NET 2025 Question 64: Endogeneity, instruments and simultaneous equations

Given the structural model

y1=3y2−2x1+x2+u1y_1 = 3y_2 - 2x_1 + x_2 + u_1y1​=3y2​−2x1​+x2​+u1​ y2=y3+x3+u2y_2 = y_3 + x_3 + u_2y2​=y3​+x3​+u2​ y3=y1−y2−2x3+u3y_3 = y_1 - y_2 - 2x_3 + u_3y3​=y1​−y2​−2x3​+u3​

Based on the order condition, the second equation is:

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Plain-text version

Given the structural model y₁ = 3y₂ - 2x₁ + x₂ + u₁ y₂ = y₃ + x₃ + u₂ y₃ = y₁ - y₂ - 2x₃ + u₃ Based on the order condition, the second equation is: (A) over identified (B) exactly identified (C) under identified (D) information not sufficient

Also written as: Given the structural model y_1 = 3y_2 - 2x_1 + x_2 + u_1 y_2 = y_3 + x_3 + u_2 y_3 = y_1 - y_2 - 2x_3 + u_3 Based on the order condition, the second equation is:

Endogeneity, instruments and simultaneous equations has come up 8 times in 3 exams since 2021.

What this question tests

This question is on Simultaneous equations: identification and estimation, part of Endogeneity, instruments and simultaneous equations in Econometrics.

When a system of equations can be estimated and by which method.

TestStop has 6 past-paper questions on this subtopic; the nearest in year are below.

  • GATE 2023 · Q48Consider the following simultaneous equations model: Yₜ = β₁+β₂Xₜ+β₃Xₜ₋₁+β₄Zₜ+μ₁ₜ (1) Zₜ = δ₁+δ₂Yₜ+δ₃Wₜ+μ₂ₜ…
Take this paper as a timed mockMore on Simultaneous equations: identification and estimation

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