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Rhyddhawyd ar: 27 November 2025
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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: 20 August 2024
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Methodoleg
Quality and Methodology Information for environmental goods and services sector statistics, detailing the strengths and limitations of the data, methods used and data uses and users.
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Rhyddhawyd ar: 24 May 2019
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Methodoleg
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Rhyddhawyd ar: 25 November 2024
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Methodoleg
Quality and Methodology Information for estimates of UK quarterly greenhouse gas emissions, detailing methods used, data it provides, and strengths and limitations
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Rhyddhawyd ar: 20 January 2023
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Methodoleg
Quality and Methodology Information (QMI) for the Coronavirus (COVID-19) Infection Survey (CIS), detailing the strengths and limitations of the data, methods used, and data uses and users.
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Rhyddhawyd ar: 07 November 2025
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Methodoleg
Quality and methodology information for national population estimates broken down into small geographical areas (Super Output Areas, health geographies, electoral wards, Parliamentary constituencies and National Parks) in England and Wales. Details the strengths and limitations of the data, methods used, and data uses and users.
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Rhyddhawyd ar: 24 April 2025
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Methodoleg
Quality and Methodology Information for mid-year admin-based population estimates (ABPEs) for England and Wales, detailing the strengths and limitations of the data, methods used, and data uses and users.
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Rhyddhawyd ar: 02 September 2022
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Methodoleg
Quality and methodology information for estimated quantity demanded (of fuel) per transaction, detailing the strengths and limitations of the data, methods used, and data uses and users.
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Rhyddhawyd ar: 24 May 2018
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Methodoleg
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Rhyddhawyd ar: 25 October 2017
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Methodoleg
