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Rhyddhawyd ar: 26 February 2025
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Methodoleg
Our planned publication schedule, approach to revisions and the availability of data in our admin-based population and migration statistical system.
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Rhyddhawyd ar: 14 October 2024
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Methodoleg
Quality and Methodology Information for long-term international migration statistics, detailing the strengths and limitations of the data, methods used, and data uses and users.
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Rhyddhawyd ar: 15 July 2024
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Methodoleg
This report provides information about the quality strategy underpinning the future population and migration statistics system in England and Wales.
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Rhyddhawyd ar: 12 January 2022
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Methodoleg
The data sources and methodology used to produce migration assumptions in the 2020-based interim national population projections.
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Rhyddhawyd ar: 27 February 2020
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Methodoleg
Understanding the reliability and accuracy of Long-Term International Migration estimates, including sampling distribution, sampling error, statistical significance and confidence intervals.
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Rhyddhawyd ar: 24 May 2019
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Methodoleg
An introduction to the main concepts that underpin Short-Term International Migration statistics for local authorities in England and Wales.
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Rhyddhawyd ar: 24 May 2019
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Methodoleg
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Rhyddhawyd ar: 23 August 2018
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Methodoleg
This background note provides an overview of the quality of the International Passenger
Survey (IPS) for estimating international migration flows and has been updated following additional work carried out during 2017. This includes the implementation of electronic questionnaires on tablets to replace the current paper questionnaires, an out-of-hours pilot, and a comparison of how other countries measure long-term immigration.
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Rhyddhawyd ar: 24 May 2018
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Methodoleg
An introduction to the main concepts that underpin international migration statistics.
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Rhyddhawyd ar: 24 May 2018
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Methodoleg
An introduction to the main concepts that underpin Short-Term International Migration statistics for England and Wales.
