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Accuracy and reliability

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Short term statistics, Business statistics
Paul Lubson
+45 39 17 32 45

pal@dst.dk

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Holiday dwellings

The variables of the statistics are associates more or less uncertainty, depending on the respondent's reporting. Number of contracts, number of houses available and rented house-weeks is regarded as the most certain. Figures for numbers of nights spend is regarded as more uncertain, since figures in some cases are based on reported estimates on average number of persons per house-week.

Overall accuracy

The annual statistics are based on an exhaustive census among accommodation agencies having 25 or more individual holiday rentals at disposal.

Sampling error

None. It is an exhaustive census.

Non-sampling error

Possible missing some few accommodation agencies, due to no official register, however all big agencies are considered as included.

The variables of the statistics are associates more or less uncertainty, depending on the respondent's reporting. Number of contracts, number of houses available and rented house-weeks is regarded as the most certain. Figures for numbers of nights spend is regarded as more uncertain, since figures in some cases are based on reported estimates on average number of persons per house-week.

Some few agencies are exempted from the census,, if number of holiday houses or apartments available drops below 25.

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 census is exhaustive, and targets all holiday house accommodation agencies with 25 or more houses or apartments at disposal, and who settle accounts directly with the owner of the houses. The latter avoids double accounting if second order agencies also facilitates same houses or apartments through first order agencies.

There exits no official register over holiday house accommodation agencies, so population is maintained and updated through the official tourism organization Visit Denmark. Also information via Internet search and direct contact with agencies helps maintaining the list. Because of this there is some uncertainty if all relevant accommodation agencies participate, however since population is quite consistent from year over year, figures are comparable regarding percentage change.

In 2011 figures for nights spend 2010 was increased by 647.000, because of revised figures from respondents. Consequently figures from before 2010 are not directly comparable with figures from 2010 and onwards.

The variables of the statistics are associates more or less uncertainty, depending on the respondent's reporting. Number of contracts, number of houses available and rented house-weeks is regarded as the most certain. Figures for numbers of nights spend is regarded as more uncertain, since figures in some cases are based on reported estimates on average number of persons per house-week.

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 statistics is not revised regularly, only if errors in reporting occurs.