There is a trust of the settlement authorities to provide information or initiate an investigation into a property. Some billing authorities may obtain information more by inspection than others. The ANALYSIs carried out by the ONS to compare the 2011 VOA data and the population census on the type of real estate showed that the agreement was different between local authorities, but still exceeded 69%. Local authorities have been found to have the lowest approval rates in rural areas. It is likely that these areas have a higher proportion of larger properties. For the 2021 census, measures will be taken to answer questions of statistical quality. For example, we will correct the missing data because it is not possible to connect to VOA data or missing values in the VOA data, and we will use an imputation process that can predict the missing values using census responses. With regard to the variable number of VOA rooms, there are differences in definition between the number of premises in the census and the number of variable VOA rooms. The census includes the kitchen that does not have VOA data. Data users should be aware of this discontinuity and it will not be appropriate to measure the number of spaces between 2011 and 2021 against this variable; Instead, the question of the census bedroom can be used for comparisons over time. The following subsection describes the level of quality assurance required for any use of the Valuation Office Agency (VOA) property attributes. Historically, the primary method of data collection has been stored by inspection and in the form of paper recording. The data was transferred in the early 2000s to prepare for re-evaluation in England and Wales2 from paper records to electronic storage as a central database.
In the central database, all the information collected is now stored and specific data is extracted and updated. As a result, the Office for National Statistics (ONS) is able to establish a quality link between the 2021 census address framework and VOA data. Every effort is made to link VOA datasets to the appropriate statistical unit, i.e. census housing for individual households or a census budget where housing has several households. Basically, VOA`s legal mission is to maintain the accuracy of the evaluation list, not property attribute data. In fact, the list and the underlying data are continuously audited of the challenge process and at least at any time when a property changes ownership. Because the ONS has access to VOA data at the registration level, additional quality tests have been conducted by the ONS for VOA data. These include checking the absence of variables or inconsistencies and comparing them with censuses and other comparative surveys. For example, the type of accommodation in the 2011 census was compared to that of VOA real estate, and 86% of related addresses agreed.
This rose to 93% if ambiguous convergences were included. The full analysis is available. The 2021 census will be the first time we have used census-related administrative data to establish a statistical census. We must ensure that administrative data is appropriate for distribution to ensure that the quality of future censuses is not influenced by households that do not have the number of spatial data, either because there is no link to VOA data, or because there are no values in VOA data. The first data collection and triggers for collecting new data or updating existing data are fully addressed in Section 5. Notifications in the form of billing authenticity reports are an important trigger for updating the property attributes of the evaluation list. The settlement authority`s reports cover different types of changes, including: The number of spaces is one of the top eight property attributes that surveys