Under the matrix notation for the classical linear regression model with T data points and k explanatory variables, , what are the dimensions of u?
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0 marksEconometricsLinear regression and OLSThe regression model and the OLS estimatorEasyabout 1 min
JNU SIS 2021 Question 1: Linear regression and OLS
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Under the matrix notation for the classical linear regression model with T data points and k explanatory variables, y = xβ + u, what are the dimensions of u? (A) T x k (B) T x 1 (C) k x 1 (D) 1 x 1
Also written as: Under the matrix notation for the classical linear regression model with T data points and k explanatory variables, y = xbeta + u, what are the dimensions of u?
Linear regression and OLS has come up 74 times in 7 exams since 2008.
What this question tests
This question is on The regression model and the OLS estimator, part of Linear regression and OLS in Econometrics.
What a linear regression model is and how ordinary least squares picks the fitted line.
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