Accuracy and reliability
Contact info
National Accounts division, Department of Economic StatisticsSara Svantesson
+45 39 17 30 66
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Based on the known knowledge and expectations about economic and technological aspects, the natural asset accounts provide an estimate of the size of the reserves of oil and natural gas in the North Sea. The Energy Agency changes the estimate of the reserves as the reserves are extracted and when new discoveries are made. Moreover, development of new extraction technology lead to revisions of estimates. The reserves are not a static physical quantity.
Overall accuracy
The combination of natural science and social science methods, assumptions and calculations in the compilation of the natural resource accounts means that there will be uncertainties related to the measurements of the physical reserves of oil and natural gas. Uncertainty in the figures is related to the estimation of the size of the reserves that can be extracted under the given economic conditions and with known technology. The consistency over time contribute to a reduction of the uncertainty. Sensitivity analysis has been conducted and is part of a Statistics Denmark Analysis available at: https://www.dst.dk/da/Statistik/Analyser
Sampling error
Not relevant for this statistics.
Non-sampling error
Uncertainty in the figures is related to the estimation of the reserves that can be extracted under the given economic conditions and with known technology. Sensitivity analysis has been conducted and is part of a Statistics Denmark Analysis available at: https://www.dst.dk/da/Statistik/Analyser
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
There is no estimates of the quality of the statistics. However, it is considered being the best possible given the resources used on the compilation of the natural resource accounts. The natural resource accounts are compiled in line with international recommendations from the UN and Eurostat.
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 final asset accounts for oil and natural gas is about 3 years after the reference year. A preliminary set of accounts for the oil and natural gas are published one to two years after the reference year.