Accuracy and reliability

Overall accuracy

The insecurity are considered low, as the respective sources has high quality. However, the combining of the sources makes insecurity , as the alignment between the sources cannot be perfect.

Sampling error

Not relevant for these statistics.

Non-sampling error

The compilation of the statistics are based on several components, which can only be made alignable to a certain extend. For household pre-payments is a common model, why a correct periodization is difficult as regards natural gas

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

It is continuously assessed whether all relevant components in the prices calculations are handled correct. Since the start of the statistics, only few errors has been detected and thus corrected.

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

Revisions occurs in the statistics when necessary. Revisions are to possible extend revisions compiled backwards.

Latest revisions have covered:

• the energy saving fee has been replaced from being part of level 1 prices to be part of level 2 (in line with energy taxes)
• the fixed administration fee for natural gas customers is now part of the prices (level 1). This has only significant importance for households.