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The role of the Methodology Group in ONS
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An introduction to index numbers, which are used to measure changes and simplify comparisons.
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All aspects of sampling, and making inferences about populations.
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An introduction to seasonal adjustment, which is widely used in official statistics as a technique for enabling timely interpretation of time series data.
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Best practice for applying disclosure control to data.
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How we strive to maintain quality standards in our statistics.
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Overview of how we handle revisions and the codes that govern those revisions.
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Frequently asked questions about statistics in development.
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Details about the admin data we use and or have saved.
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Explaining measures of uncertainty such as standard error, confidence interval, coefficient of variation and statistical significance and how they affect estimates from our surveys.
Methodology topics and statistical concepts
The statistical methods and techniques that underpin all our surveys and statistical outputs, and information on statistical quality and revisions policies.