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Spencer Antonio Marlen-Starr

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Spencer Antonio Marlen-Starr

Mean Absolute Deviation > “Standard” Deviation

Note: A reply to this story rightly pointed out that I should have included other alternative measures of dispersion besides just the Mean…

12 min readNov 24, 2023

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Mean Absolute Deviation > “Standard” Deviation

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Spencer Antonio Marlen-Starr
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GoPenAI

Tuning a Random Forest Classification Model in R, Part I

This article is a follow up to my previous article Forecasting with Classification Models in R, but in this one, I focus exclusively on the…

18 min readOct 2, 2023

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Tuning a Random Forest Classification Model in R, Part I

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Spencer Antonio Marlen-Starr
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GoPenAI

Estimated Exhaustive Regression

Spencer Marlen-Starr This Research Report was written as a Graduate Student in the Data Analytics Engineering Master’s Program at George…

19 min readJul 18, 2023

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Estimated Exhaustive Regression

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Spencer Antonio Marlen-Starr
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GoPenAI

Forecasting with Classification Models in R

The datasets used in this tutorial came from kaggle. The GitHub Repository for this project can be found here.

19 min readSep 4, 2023

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Forecasting with Classification Models in R

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Spencer Antonio Marlen-Starr

Why Thomas Sowell Should be Recognized as a Member of the UCLA School of Economics

Abstract

33 min readSep 15, 2023

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Why Thomas Sowell Should be Recognized as a Member of the UCLA School of Economics

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Spencer Antonio Marlen-Starr

Natural Selection, Irrationality, ‘Behavioral Economics’ and Neoclassical Economic Theory, Part III

This article is the third and final in this brief series, here are links to the previous two: Part I and Part II.

11 min readMay 30, 2024

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Natural Selection, Irrationality, ‘Behavioral Economics’ and Neoclassical Economic Theory, Part III

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Spencer Antonio Marlen-Starr

Three Differences Between Econometrics and Machine Learning in Practice

If you are a data scientist or an economist who is curious what the main differences between machine learning and econometrics, I would say…

2 min readMay 24, 2024

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Spencer Antonio Marlen-Starr

My Dual Review of ‘The Myth of the Rational Voter’ & ‘The Myth of Left and Right’

Note: This article will be much easier to understand for anyone who has taken (and understood and remembered) at least one economics…

20 min readMay 24, 2024

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My Dual Review of ‘The Myth of the Rational Voter’ & ‘The Myth of Left and Right’

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Spencer Antonio Marlen-Starr

I Redesigned a Bad Data Visualization I Found Online from Scratch

Note: This was done for a project in the second course in my online master’s program in data analytics engineering at George Mason…

5 min readMay 16, 2024

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I Redesigned a Bad Data Visualization I Found Online from Scratch

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Spencer Antonio Marlen-Starr

Do I Really Know Anything?

It occurred to me a few monthly ago that I don’t actually know most of what I think I know about the world (for sure) and I can’t get it…

2 min readMay 16, 2024

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Spencer Antonio Marlen-Starr

Spencer Antonio Marlen-Starr

Data Analyst & Junior Data Scientist (MS in Data Analytics Engineering) with a deep interest in Economics & Applied Epistemology.

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