Accuracy and reliability
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Business Dynamics, Business StatisticsHenrik Huusom
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The Radio and TV Statistics, Consumption, is 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 directly from the data supplier. The data supplied is subject to a quality check, but no calculations of uncertainty are made.
Overall accuracy
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 radio listeners are based on weekly electronic surveys of the listening habits of approx. 750 individuals. Overall accuracy is basically satisfactory. No calculations of uncertainty are made. Please refer directly to the source for further details concerning overall accuracy.
Sampling error
Refer to the original sources.
Non-sampling error
Refer to the original sources.
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
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 corresponding to 2,200 individuals. The figures for radio listeners are based on weekly electronic surveys of the listening habits of approx. 750 individuals. Overall accuracy is basically satisfactory. No calculations of uncertainty are made. Please refer directly to the source for further details concerning overall accuracy.
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
Only final figures are published. However, in certain cases the tables can be updated with new figures for previously published periods. This is because the source material submitted is based on new runs which include updated and corrected data.