Accuracy and reliability
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Science, Technology and Culture, Business StatisticsChristian Törnfelt
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The statistics is based on a survey based on a sample of respondents and readership figures are therefore subject to uncertainty. Readership figures say nothing about the thoroughness of reading, and reflects the respondents' own perception of their media usage. The statistics are based on official, industry-recognized readership measurements from Index Denmark/Gallup. In addition to the statistical uncertainty in the measurement of readership figures in the original sources, typing, coding and calculation errors in the data processing can be sources of uncertainty.
Overall accuracy
The statistics are based on official, industry-recognized readership measurements of Index Denmark/Gallup. Referring to the original sources for a review of the statistical processing.
Sampling error
Not compiled for this statistic. Referring to the original sources for a review of the statistical processing.
Non-sampling error
In addition to the statistical uncertainty in the measurement of readership figures in the original sources, typing, coding and calculation errors in the data processing can be sources of uncertainty.
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
No actual quality measurement has been carried out, but the statistics are considered to be relevant for users with an interest in the development of the population's media consumption. It is not possible to identify and quantify the various sources of uncertainty in the available material, but as the statistics are based on the official, industry-recognized measurements of readership figures from Index Denmark/Gallup, accuracy and reliability are considered to be satisfactory. With the annual update of statistical bank tables, the timeliness and availability of statistics is probably satisfactory for the generally interested user, but probably satisfactory for a professional in the media industry, who is therefore referred to other publications of Index Danmark/Gallup's results. It is possible to follow the development within newspapers over time by comparing several StatBank tables, but there are data breaks in relation to methods etc.
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 statistics is published.