ECON 2223 - Assignment I
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ECON 2223 - Assignment I
Part I :
1. Consider the following model :
(a) Provide the definition of RSS for this model.
(b) The OLS estimator is : βˆ0 = . Show the derivation steps needed to obtain
this result.
(c) Let the true model be defined as Yi = β0 + β1Xi + ui. Is the OLS estimator found in (b) biased?
2. Consider the following model :
substitute Yi into equation (3) and simplify. Show steps.
3. Consider the following model :
Assume X1,i = 4 ∗ X2,i, and substitute this into equation (5) and simplify. Show steps.
— Files :
1. ForAssignment1.R : Code file for R
2. GhanaData.RData : Data file for R
3. GHIR41FL.txt : Variable description file for GhanaData.RData
— Work through ‘ForAssignment1.R’ file in R Studio.
— Answer the five questions in the code file.
Submission should include YOUR edited code file.
2022-02-17