For topics about which information has been collected by means of a sample, the metadata also contain descriptions of
— the sampling design,
— possible biases in the estimation due to model assumption errors,
— formulae and algorithms used to calculate the standard error.
3. TIMELINESS AND PUNCTUALITY
The following information has to be provided for the national level:
(1) Calendar date(s) of the transmission of data to the Commission (Eurostat), broken down by hypercubes(1);
(2) Calendar date(s) of major revision(s) of the transmitted data, broken down by hypercubes(1);
(3) Calendar date(s) of transmission of the metadata(20).
In the case of major revisions on 1 April 2014 or after, Member States have to report the respective calendar date(s) separately to the Commission (Eurostat) within one week after each major revision.
4. ACCESSIBILITY AND CLARITY (OPTIONAL)
Member States may report on the conditions for access to the data and metadata they make available from their 2011 censuses of population and housing, including on those relating to media, support, documentation, pricing policies, and/or any restrictions.
5. COMPARABILITY
For each topic, Member States have to report on any definition or practice in the Member State which could impair the EU-wide comparability of the data.
6. COHERENCE
For each topic referring to person counts(2), Member States have to provide the average absolute deviation(21) for the cell values in the hypercubes set out in Annex III(18).
(1) As listed in Annex I to Regulation (EU) No 519/2010.
(2) Topics, or data sources for topics, for which the total shown in the table in Annex III is the total population.
(3) The reporting on the data sources must be comprehensive and free of overlaps in the sense that it is possible to allocate each topic to exactly one data source about which information is provided in this section. If a record linkage has led to the creation of a new data source, Member States have to evaluate the new data source rather than the original data sources from which the new data source has been derived.
(4) ((1) + (3) – (4)), referring to the data in point 2.1.1. of this Annex, given in absolute values.
(5) Any record imputation increases the size of the census population. In a data source resulting from a record linkage, only the records that have been imputed into any of the original data sources, thereby increasing the size of the census population, have to be counted as imputed records in the new data source.
If a data record is weighted in the process of generating the required statistical output for the target population with a weight w
orig
bigger than 1, it has to be counted as an imputed record with the weight w
imputed
= w
orig
– 1. The reference hypercube for the weights w
orig
is the one listed below the table in Annex III for the statistical units on which the data source reports.
(6) Any record deletion decreases the size of the census population. In a data source resulting from a record linkage, only the records that have been deleted in any of the original data sources, thereby decreasing the size of the census population, have to be counted as deleted records in the new data source.
If a data record is weighted in the process of generating the required statistical output for the target population with a weight w
orig
smaller than 1, it has to be counted as a deleted record with w
deleted
= 1 – w
orig
. The reference hypercube for the weights w
orig
is the one listed below the table in Annex III for the statistical units on which the data source reports.
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