Statistical processing
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Short term statistics, Business statisticsMajbrit Holst and Nanna Nikander Nonboe-Nygaard
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Data for this statistics is collected monthly for reporting that covers approx. 95 pct. of the population, to which is added an enumeration of the annual reports from the previous year, so that the entire population of holiday house rental with a minimum of 25 houses available is covered. The monthly statistics shows temporary data for the holiday house rental. When the reference year is over, the calculated imputed values are replaced with the final data for the year. The annual statistics with the final data include reporting from every holiday house rental with a minimum of 25 houses available for renting.
Data for the annual statistics is collected via an upload solution for the rental agencies that only report annually or via an electronic questionnaire for the rental agencies that report monthly. The collected data undergoes micro-level debugging during the actual collection and at the macro-level when the data is aggregated.
Source data
Data is collected from holiday house rental agencies with a minimum of 25 houses available, which are registered in the CVR register.
Frequency of data collection
Data for the statistics is collected respectively monthly and annually.
Data collection
Data is collected in three different ways. For the monthly statistics, data is collected electronically. At the end of the reference year the reporters receive an online questionnaire on (http://www.virk.dk) with one variable (the house capacity for the reference year calculated per May 1). The reporters that exclusively reports yearly, reports via an upload solution.
Data validation
Data is collected from each company and is checked for errors during the data collection. When the data is collected, a micro error search is carried out, where significant deviations from the same month last year or incorrect summations are examined and possibly corrected, if any error has occurred, after contacting the company. The variables are also compared with each other, and it is examined whether the totals match. After aggregating the data into totals for geographical area and nationality of the guests, the totals are searched for errors, the totals are also checked across census periods.
Data compilation
In the annual statistics, the reports are summed up to municipal, regional and national totals. For the annual statistics, this is a mandatory count, which is why data is not normally imputed or corrected, as data usually arrives before publication for all reporting companies. In the monthly statistics, the reports are summed up to municipal, regional and national totals. In order to get the full population, for those companies that only report annually, the latest annual statistics are calculated, so we get a figure for the total number of holiday home rentals. As reporting takes place by automatic generation and transmission of data, there is usually no data missing at the time of publication. The variable "number of nights" is calculated as the number of guests times the length of the stay in the holiday house. E.g. 2 guests staying in a holiday house for five days equals 10 nights. Number of nights is also referred to as "guest nights" in some contexts.
Adjustment
The annual statistics are not seasonally adjusted. The monthly statistics are seasonally adjusted using an ARIMA model, where trading days and the Easter effect are taken into account. Data is not corrected beyond what has already been described under data validation and data processing.