Explain carefully the meaning of each of the following terms: a. Population regression function (PRF). b. Sample

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Explain carefully the meaning of each of the following terms:
a. Population regression function (PRF).
b. Sample regression function (SRF).
c. Stochastic PRF.
d. Linear regression model.
e. Stochastic error term (ui).
f. Residual term (ei).
g. Conditional expectation.
h. Unconditional expectation.
i. Regression coefficients or parameters,
j. Estimators of regression coefficients.
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Essentials of Econometrics

ISBN: 978-0073375847

4th edition

Authors: Damodar Gujarati, Dawn Porter

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