Practical guides to official data

Find the right dataset, check definitions and leave a reproducible correction. These maintained guides are separate from the open wiki revisions.

• World Bank API: retrieve every page and preserve missing values

  A bounded workflow for World Bank indicator downloads: paging, null values, audit counts and reproducible query notes.

• UK employment statistics: choose the right denominator and period

  Choose ONS employment, unemployment and inactivity measures without mixing age groups, geography or release periods.

• Compare health spending without mixing GDP shares and per-person amounts

  Identify health expenditure measures, units, years and aggregation methods before comparing countries or totals.

• EIA API v2: check pagination, filters and units before exporting

  A reproducible checklist for EIA energy-data downloads, including metadata routes, pagination and unit-aware exports.

• Census ACS comparisons: match survey periods, variables and geographies

  Select comparable ACS estimates and retain geography codes, margins of error and dataset vintages.