Statistical processing
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Business Development, Business StatisticsSøren Kühl Andersen
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Data are collected by web from 2,000 enterprises from Retail Trade. In the questionnaire the enterprises are asked to breakdown their turnover by a number of products, services and client categories. The reported data are checked by comparing the distribution of turnover among enterprises that are similar. Survey data is grossed up in part by including information from administrative sources on the VAT turnover in the reference year for the entire population.
Source data
The data are based on web questionnaires sent to approximately 2,000 units. In the sample, all enterprises with annual sales in excess of DKK 20 million, VAT included, are included. The remaining sample is based on stratified, random selection. The population is divided into 4 size classes. The size classes are: DKK 2.5-5 million, 5-10 million, 10-20 million and beyond 20 million. The units with retail trade as their secondary line of business are chosen based on their share of the total turnover within the sector of retail trade. The limit of DDK 2.5 million in annual turnover for participating in the sample has been chosen to curtail the burden of the respondent for small enterprises.
Frequency of data collection
Data are collected every five years.
Data collection
Data are collected by web questionnaires. In the questionnaire the enterprises are asked to distribute their turnover in DKK 1,000 by a number of products.
The reporting is mandatory, i.e. the enterprises are required to report accurate data on time. If the data has not been received , the companies will be reminded 3 times by mail or telephone. After that a registered letter will be sent to inform the enterprises that if the information are not submitted within one week, Statistics Denmark will refer the matter to the police for requesting the imposition of a fine. And the enterprises still have to give us the data we have asked for.
Data validation
The submitted data are checked for errors, ex. data of the individual reporter are compared with similar enterprises reporting in the current period. If the data are significantly different than expected, the enterprise will be contacted. It must be assumed that not all errors in the data are found. That is why the statistics may be subject to some uncertainty associated with error reporting.
Data compilation
The data from the questionnaires received are grossed up to the provisional total turnover from Business Register. The data are corrected for bias in the sample and response pattern. A so-called ratio estimate is used, which includes information on the taxable turnover of the year concerned for the entire population of the sector for Retail Trade.
Adjustment
Not relevant for these statistics.