Module 9 Activity: Create an EDA Brief

Estimated active time: 90 minutes

Task

Explore a fictional content performance or learner progress dataset and write three careful observations.

Steps

1. Write the main EDA question.
2. Record shape, dtypes, missing values, and duplicate count.
3. Inspect numeric summaries.
4. Inspect category counts.
5. Compare at least two groups.
6. Inspect one possible relationship between numeric columns.
7. Investigate one missingness pattern.
8. Investigate one outlier or unusual record.
9. Write three findings using evidence, interpretation, and limit.

Deliverable

• EDA notebook or worksheet.
• Data quality summary.
• Three evidence-backed observations.

Quality bar

The activity is ready when every finding includes a limitation and avoids causal overclaiming.