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		NSMS14: Measuring and improving data quality, GSS Methodology Series Product   This monograph is the second report of the GSS(M) Task Force on non-sampling error. It describes the various sources of non-sampling errors, discusses ways to measure the bias and increase in variance, which may result and provides a guide to methods, which can be used to reduce the impact on data quality. Please be aware, that due to its size, this file may take some time to download. View more information about this product.   Office for National Statistics (ONS), One-off, ISBN=1857743024, Hardcopy Publication, Contact: +44 (0)20 7533 6247 NSM14: Measuring and improving data quality (4.3Mb - Pdf) GSS Methodology Series (Web link)   Accessibility|FAQs and Contact Us|Terms & Conditions|Privacy Statement Link to us|Crown Copyright applies unless otherwise stated