Welcome to ENS-215

Winter 2026

Lecture overview

• Introductions
• Class survey
• Why learn data science?
• Syllabus and class website

About me

• Prof. Mason Stahl
• Department of Geosciences and ESPE
• Office: Olin 102A
• Email: stahlm@union.edu

My research is on hydrogeology and water resources. I work in across the US and SE-Asia.

Have you heard of…

• R/RStudio
• Data Science
• Machine Learning
• Big Data

About you

• Name
• Year
• Major
• Hometown/region
• Anything else you’d like to share

What is data science/analytics?

Why learn data science?

Image source: R4DS

Our class

Summary info about the students in our class

Class composition by year

Class composition by major

What we’ve heard of