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We moved them to The National Archives website, to keep this website as responsive as possible.
Please note: all historical data is still on this website.
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Methodology used to produce our provisional long-term international migration estimates.
An explanation of the methods used to produce the latest provisional statistics on migration flows into and out of the UK.
Quality and Methodology Information for the Price Index of Private Rents, detailing the strengths and limitations of the data, methods used, and data uses and users.
Quality assurance of the administrative data used in the monthly production of the Price Index of Private Rents.
Response rates, sample size, and quality assessment of the Office for National Statistics quarterly Labour Force Survey.
Guidance about the background and methodology of the Labour Force Survey (LFS).
Explanation and guidance on how to use the data published in the past and projected period and cohort life tables.
Outlines the ONS's approach for the assessment of residual seasonality, including descriptions of all the tests applied.
Quality and Methodology Information for child and infant mortality statistics, detailing the strengths and limitations of the data, methods used and data uses and users.
