Dataset library
Data to practise on
32 datasets across 17 domains. Every one is synthetic: generated by documented, reproducible code so it behaves like real data (skew, outliers, missing values, confounding) without describing any real person or organisation. Each comes with a data dictionary, its known quirks, and the methods it suits.
hr
- Employee commute timesOne row per employee of a fictional mid-sized company, Sandreed Services, describing a typical one-way commute: travel mode, shift, distance and the usual door-to-door…240 rows · 5 columns · one row = one employee (their typical one-way commute)
- Employee salaries at a fictional companyOne row per employee of Qasr Horizon Trading, a fictional company with 600 staff across six departments. Includes job level, experience, education, performance rating,…600 rows · 9 columns · one row = one employee
- Employee engagement surveyResponses to an annual engagement survey at a fictional services company, Palmstone Group. Each row is one respondent: department, tenure band, work arrangement, six 5…778 rows · 12 columns · one row = one survey response (one employee)
- Engagement survey population and response ratesCompanion table to engagement_survey: for each department of the fictional Palmstone Group, the number of employees invited to the survey (headcount), the number who r…6 rows · 4 columns · one row = one department
retail
- Weekly store salesWeekly sales for the 40 stores of a fictional home-goods chain, Lumen Bay Stores, over two years (104 weeks). Each row is one store-week with the store's region and si…4,160 rows · 10 columns · one row = one store-week
- Retail transactions1 500 till transactions from five branches of a fictional convenience-and-pharmacy chain, Tamr Corner, during March 2024. Each row is one basket: store, date, hour, cu…1,500 rows · 8 columns · one row = one transaction (basket)
- Customer records (messy)An export of 700 customer records from the point-of-sale system of a fictional homeware retailer, Rimal Living, deliberately left messy for data-cleaning practice: exa…700 rows · 8 columns · one row = one customer record (some customers appear twice)
- Customer records (cleaned)The cleaned counterpart of customers_messy for the fictional retailer Rimal Living: the same records after applying six documented cleaning rules. Use it to check your…679 rows · 8 columns · one row = one customer
product
- Checkout redesign A/B testA 14-day online experiment at a fictional e-commerce site, Nakhla Market. About 16 000 new visitors were randomly assigned to the current checkout (A) or a redesigned …16,000 rows · 9 columns · one row = one user in the experiment
- Subscription price testA randomized price test for the monthly plan of a fictional language-learning app, Sadeem Lingo. About 9 000 visitors to the pricing page were randomly shown one of fo…9,000 rows · 7 columns · one row = one visitor to the pricing page
manufacturing
- Machined shaft diametersQuality-control measurements of a turned steel shaft at a fictional precision workshop, Ridgeline Components. The specification is 25.00 mm ± 0.05 mm. For each of two …300 rows · 7 columns · one row = one measured part
- Daily inspection defectsFinal inspection results for 60 production days at a fictional appliance-panel plant, Corniche Fabrication. Each row is one day: units inspected (which varies), defect…60 rows · 9 columns · one row = one production day
finance
- Daily returns of three funds750 trading days (about three years) of daily percentage returns for three fictional investment funds managed by an invented firm, Meridian Dunes Capital: a low-risk i…750 rows · 4 columns · one row = one trading day
- Home sales in a fictional city800 sales of villas and townhouses during 2023 in Wadi Noor, a fictional city with five districts. Each row is one sale with price, floor area, bedrooms, bathrooms, bu…800 rows · 10 columns · one row = one property sale
banking
operations
- Monthly product demandEight years (96 months, 2017–2024) of monthly unit demand for three products sold by a fictional household-goods distributor, Saffron Wharf Supply: ceiling fans (summe…288 rows · 4 columns · one row = one product-month
- Contact-centre hourly callsHourly operations data for 90 days of the customer contact centre of a fictional utility, Brightwell Water Services, open 08:00–21:00. Each row is one day-hour: calls …1,170 rows · 9 columns · one row = one hour of one day
healthcare
- Blood-pressure drug trial (fictional)A fictional, simulated randomized double-blind trial of an antihypertensive tablet against placebo in 200 adults with raised systolic blood pressure (≥ 140 mmHg at scr…200 rows · 9 columns · one row = one trial participant
- Recovery at two hospitals (Simpson's paradox)Patient-level outcomes for 1 000 patients treated for the same condition at two fictional hospitals (Hospital A, a regional referral centre, and Hospital B, a communit…1,000 rows · 6 columns · one row = one patient admission
- Recovery at two hospitals — summary tableThe aggregated 2 × 2 × 2 table behind hospital_outcomes: for each fictional hospital and severity, the number of patients, the number recovered and the recovery rate. …4 rows · 5 columns · one row = one hospital × severity group
public health
marketing
- Weekly advertising and salesThree years (156 weeks) of weekly marketing data for a fictional packaged-juice brand, Oasis Grove Drinks: spend on TV, digital and radio (thousand SAR), average shelf…156 rows · 9 columns · one row = one week
- Marketing funnel by channelWeekly funnel counts for five marketing channels of a fictional online furniture shop, Cedar & Dune Home, over 26 weeks (January–June 2024). Each row is one channel-we…130 rows · 7 columns · one row = one channel-week (aggregated counts)
transportation
- Delivery times before and after a routing change (paired)Average delivery time per route for 60 courier routes of a fictional parcel company, Swiftdune Couriers, measured over four weeks before and four weeks after a new rou…60 rows · 6 columns · one row = one delivery route (before and after)
- Delivery times under old and new routing (independent samples)Individual parcel delivery times for a random sample of deliveries from the fictional Swiftdune Couriers: 80 deliveries routed by the old system and 76 by the new rout…156 rows · 5 columns · one row = one parcel delivery
- Departure delays2 500 scheduled domestic departures in June–August 2024 operated by four fictional airlines from five fictional airports. Each row is one flight: carrier, origin, dist…2,500 rows · 8 columns · one row = one scheduled flight departure
sports
education
customer experience
research
energy
insurance
Your own data
In the lab you can import a CSV file. It is read and analysed in your browser and stored only there — it is never uploaded to Statistics Quest. Remove personal information before importing data you are responsible for.