The Church of Scotland Yearbook (known informally as the Red Book because of its red binding) is a collection of statistical data

Statistics

Statistics is the study of the collection, organization, analysis, and interpretation of data. It deals with all aspects of this, including the planning of data collection in terms of the design of surveys and experiments....

 published annually by the Church of Scotland

Church of Scotland

The Church of Scotland, known informally by its Scots language name, the Kirk, is a Presbyterian church, decisively shaped by the Scottish Reformation....

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It contains contact information for every minister, as well as contact details for the church offices, clerks, and general personnel.

It also contains congregational statistics for every parish in the Church of Scotland, and gives the following information:

• Number of communicants
• Number of elders
• Membership numbers of the Church of Scotland Guild
• Parish's income
• Number of young people (under the age of eighteen)