Econometrics Messages

Background and OLS

(posted: 31 Aug 2025)

This message outlines the lesson plans for our sessions on Tue 02 Sep and Thu 04 Sep as well as for our sessions on Tue 09 Sep and Thu 11 Sep.

After finishing our introductory discussions of the Octopus Test and the effect of the minimum wage, we will review some background on statistics and probability. And then we will discuss ordinary least squares.

To prepare, please read Studenmund, chaps. 1, 2 and 3. And please begin studying the problem set. We'll discuss problem #4 first, then return to #1. To assist you, I have provided my answers to #1.

Finally, for a practical example, we'll examine the effect that a change in law has on labor market outcomes. For that discussion, please read my Analysis of the "Biagi Law". To explain my choice, I wrote a page about Teaching with the "Biagi Law" Data.

Welcome to Econometrics

(updated: 21 Aug 2025)

Welcome to Econometrics. This website helps me organize the course. I hope you find it helpful.

I have posted a copy of the syllabus. Please review it and the materials listed on the metrics page. And in case you ever need them, I keep old messages on the message board page. I hope this way of organizing the course helps.

textbooks

The textbooks that we will use are A.H. Studenmund's Using Econometrics: A Practical Guide and Peter Kennedy's A Guide to Econometrics.

To get the best deal on the Studenmund textbook, compare prices at Amazon and Alibris. And go ahead and buy a used copy. Then use your savings to buy a used copy of Kennedy's Guide. To get the best deal, compare prices at Amazon and Alibris.

data and software

To learn econometrics, you must do econometrics, so this course provides a few datasets and some null hypotheses to help you learn how to conduct an analysis of the data.

To conduct an econometric analysis, we'll use Gretl. And when we study econometric theory, we'll use wxMaxima. Please install both.

The security features of macOS quarantine wxMaxima, preventing its installation. To lift the quarantine:

xattr -d com.apple.quarantine $HOME/Downloads/Maxima-5.43.0-VTK-macOS.dmg

For more details, see the wxMaxima installation instructions by Univ. of New Haven.

let's get started

I'd like to begin the semester with a pair of introductory discussions that will help you appreciate the theory that we'll discuss this semester.

In the first discussion, I'd like to compare Statistics and Machine Learning. The specific topic will be the "octopus test" that Bender and Koller developed in their 2020 paper, "Climbing towards NLU." To help you understand it, I have prepared some notes on Bender and Koller's paper. And for fun, be sure to read Appendix A of the paper. It's hilarious.

In the second discussion, I'd like to focus on a policy issue that we'll discuss later in the semester. The specific topic will be how the minimum wage affects employment. For that discussion, please study my monopsonist and minimum wage problem and please read my analysis of minimum wage, employment and annual pay.

I hope you'll enjoy the discussions. I'm looking forward to working with you this semester.

Sincerely,
- Eryk Wdowiak

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