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Sample datasets for statistics practice

Clean, documented CSV files for learning statistics and data visualization — every column described, every file ready to import. Released into the public domain (CC0): use them in courses, tutorials, blog posts, or screenshots, no attribution required.

These power the 25-lesson tutorial →

1,500 rows · 15 cols

Housing Market

Property listings with prices, size, condition, and dates — a mixed numeric/categorical workhorse.

18,818 rows · 2 tables

Retail Sales

Two years of orders plus a store lookup table — for time series, grouping, and joins.

220 rows · 10 cols

Clinical Trial

Treatment vs control with pre/post scores — built for two-sample tests.

1,600 rows · 10 cols

Survey Responses

Plans, regions, and satisfaction ratings — for categorical charts and contingency tables.

8 rows · 4 cols

Region Satisfaction

Paired 2024/2025 scores per region — a wide, two-endpoint table for dumbbell charts and dot plots.

2,000 rows · 13 cols

Process Measurements

A time-ordered manufacturing log with drift and defect counts — for control charts.

20 rows · 7 cols

Stores (lookup)

The store dimension table that joins to Retail Sales on StoreID.

License. Every dataset here is synthetic and released under CC0 1.0 (public domain). No real people or companies are represented. Use them freely — a link back to this page is appreciated but not required.

Download one, open it in Stratum

Drag any CSV onto Stratum and it imports in a click — columns typed automatically, ready to chart and analyze. Pair a dataset with the matching tutorial lesson to follow along.

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