Publications by My Name
EC3133: Revision Guide
This document includes a summary of what we have covered throughout the semester as well as some information on how you can revise for the final exam. Closer to the exam period, I will send out some sample questions to help you practice for the exam. This will not be a comprehensive practice exam but it will just include some sample exercises. Keep...
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The Big Picture
The Big Picture EC3133 Why Does Econometrics Matter for Policy? Econometrics provides the tools to analyze data and inform policy decisions. However, incorrect use of econometrics can lead to: Misleading conclusions. Ineffective or harmful policies. In this class, we learned: How can econometric errors arise? Some examples are: Omitted Varia...
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estpitfalls
Estimation Pitfalls in Econometrics EC3133 2024-12-06 Estimation Pitfalls Why Do Estimators Fail? Econometric estimators rely on assumptions to provide unbiased and consistent results. When these assumptions fail, the results can be misleading or outright wrong. Key Assumptions Linearity: The relationship between variables is linear. Exogenei...
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Review Exercises 1
Review Exercises EC3133 2024-12-06 Problem 1: Ordinary Least Squares (OLS) Question A company wants to understand the relationship between advertising expenditure and sales. Advertising and Sales Data Month Advertising Sales 1 2 4 2 3 5 3 5 7 4 7 10 5 9 15 Manual Solution The OLS estimators are: \[ \beta_1 = \frac{\sum (X_i -...
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lec8-review-exercises
Review Exercises EC3133 2024-12-06 Problem 1: Ordinary Least Squares (OLS) Question A company wants to understand the relationship between advertising expenditure and sales. Advertising and Sales Data Month Advertising Sales 1 2 4 2 3 5 3 5 7 4 7 10 5 9 15 Manual Solution The OLS estimators are: \[ \beta_1 = \frac{\sum (X_i -...
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Sample Project
This document demonstrates what your project should look like. The results, tables and graphs I include here are only examples. Each section includes a recommended word count to give you an idea about how much you should write. Try to stay around the word limit (not too below it or not too above it). Note that the word count does not need to be exa...
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Econometric Insights I
Econometric Insights (Part I) EC3133 The Big Picture Understanding Empirical Analysis: An intuitive perspective on estimation (from covariance to OLS Projection) How covariance leads to regression coefficients Why OLS is really just a projection Visual understanding of the math What we will see: Regression finds patterns in joint movement It�...
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Econometric Insights II
Econometric Insights (Part II) EC3133 Some Insights into Statistical Concepts Think of random variables like loot boxes in games - you know what you might get, but not exactly what you’ll get. Probability is like your win rate in games Standard deviation is like how much your gaming scores typically swing up or down. Regression is like finding...
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Econometric Insights III
Econometric Insights (Part III) Common Statistical Distributions in Nature EC3133 2024-11-29 Normal Distribution (Gaussian) Origins: Developed by Carl Friedrich Gauss Also known as the “bell curve” Arose from the study of measurement errors in astronomy Common Occurrences Normal Distribution in Nature Human height and weight IQ scores Mea...
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Lecture 6: Extremum Estimators
Extremum Estimators: Maximum Likelihood and Method of Moments Estimators - Theory and Applications Introduction What are Extremum Estimators? Extremum estimators are a class of estimators that optimize an objective function. Examples include Maximum Likelihood Estimators (MLE) and Method of Moments. Why Study Extremum Estimators? Extremum estim...
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