Accuracy and reliability
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Business structures, Business StatisticsThomas Lauterbach
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- Coverage: The statistics are based on random sample surveys. The TV tables are based on Gallup TV Meter equipment, which logs all TV viewing for 1,000 selected households, or amongst 2,200 individuals. The figures for advertising are based on sources which cover a large part of the advertising market supplemented by estimates from industry associations and expert panels.
- Collection: The statistics are based on data already published by TNS Gallup's Radio Meter and TV Meter media surveys, which are the official, industry-recognised surveys of the listening and viewing habits of the population. Statistics Denmark obtains the data direct from the data suppliers.
- Processing: Data already in the public domain is transferred for all relevant tables. The data supplied is subject to a quality check, which includes comparison with the preceding time series, and calculation of control totals where they are included in the data submitted. In some cases, subtotals, totals and shares are also calculated based on the data submitted.
Overall accuracy
Overall reliability is basically satisfactory. Statistics Denmark believes that where data is based on random sampling, the size of random samples taken is satisfactory. Please refer directly to the sources for further details concerning overall reliability.
Sampling error
Not relevant for these statistics.
Non-sampling error
Not relevant for these statistics.
Quality management
Statistics Denmark follows the recommendations on organisation and management of quality given in the Code of Practice for European Statistics (CoP) and the implementation guidelines given in the Quality Assurance Framework of the European Statistical System (QAF). A Working Group on Quality and a central quality assurance function have been established to continuously carry through control of products and processes.
Quality assurance
Statistics Denmark follows the principles in the Code of Practice for European Statistics (CoP) and uses the Quality Assurance Framework of the European Statistical System (QAF) for the implementation of the principles. This involves continuous decentralized and central control of products and processes based on documentation following international standards. The central quality assurance function reports to the Working Group on Quality. Reports include suggestions for improvement that are assessed, decided and subsequently implemented.
Quality assessment
Not relevant for these statistics.
Data revision - policy
Statistics Denmark revises published figures in accordance with the Revision Policy for Statistics Denmark. The common procedures and principles of the Revision Policy are for some statistics supplemented by a specific revision practice.
Data revision practice
The results of the statistics are identical with the figures published which serve as sources for Statistic Denmark's figures.