Week 8: Exploratory Data Analysis

Today’s Question

How do we discover patterns without fooling ourselves?

EDA Cycle

1. Ask a question.
2. Visualize or transform.
3. Notice a pattern or problem.
4. Refine the question.
5. Record uncertainty.

Variation

How does one variable change across observations?

Covariation

How do two or more variables change together?

AI Check

Generated summaries often overstate patterns. Look for uncertainty, outliers, and missing context.