Consider a polynomial regression model Y₁ = B₁ + B₁X₁ + B₂X? + … + ß₂X? + Ui, where E (u₁|X₁, X², ..., XT) = 0, observations (Y₁, Xi) are independent and identically distributed and 0 < E (Y;¹) < ∞, 0 < E (X;¹¹) < ∞. How is the OLS estimation affected if we estimate a linear regression (r = 1) when the true form of the regression function is quadratic (r = 2) or cubic (r = 3)?
Consider a polynomial regression model Y₁ = B₁ + B₁X₁ + B₂X? + … + ß₂X? + Ui, where E (u₁|X₁, X², ..., XT) = 0, observations (Y₁, Xi) are independent and identically distributed and 0 < E (Y;¹) < ∞, 0 < E (X;¹¹) < ∞. How is the OLS estimation affected if we estimate a linear regression (r = 1) when the true form of the regression function is quadratic (r = 2) or cubic (r = 3)?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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