Data and charts
From raw records to an auditable chart: define units, handle missingness, compare groups and inspect visual encoding.
Four lessons and an independent integrated task. Allow roughly 15–25 minutes per lesson, plus time for projects and delayed retries.
Review the existing foundation
Course contents
- Define and clean the records
Define the observation unit and document cleaning.
- Look beyond the average
Interpret mean, median, range and group size together.
- Repair a misleading chart
Choose a chart, label units and inspect the baseline.
- Check robustness and report
Document alternative analyses and separate description from causation.
- Integrated task and acceptance
Fictional library loans: A has 2,4,4,6 and B has 1,1,2,12; each also missed one record. Produce a chart and report covering mean, median, missingness, encoding, limits and further collection. Audit this AI candidate: “Both means are four, so the services are identical.”
No login required. Exercises include explanations; open work uses self-check criteria without automatic grading or certification.
Written and maintained by Fineuralab. Updated 2026-10-04. Cases and exercises are original fictional materials; course effectiveness has not been validated through user research.
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