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IPS 208 Johan S. et al.
            in cases S1a, S2 and S3, where non-sampling errors have a  big impact on
            overall  data  quality.  After  the  data  collections  are  carried  out,  multiple
            indicators can be calculated for each source of non-sampling errors associated
            with  the  different  steps  in  a  statistical  process,  while  a  unique  synthetic
            indicator, such as the mean square error, is not computable. Thus, synthetic
            quality indicators cannot be set in a regulation such as  the IFS.  However,
            national  authorities  are  required  to  describe  in  quality  reports  a  set  of
            indicators that are both quantitative and qualitative. Quality assessment for
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            multisource data is under continuous development in ESSnet projects  such as
            the ESSnet on Quality of Multisource Statistics.
                 The move towards source agnosticism improves subsidiarity, enabling EU
            member  states  to  choose  the  most  cost-effective  sources  for  themselves
            according to their national conditions and needs. It also increases flexibility,
            thanks to greater openness to future data sources such as precision farming
            data.
             iii.   Reduced number of variable breakdowns
                The 2010 agricultural census covered a total of 273 variables, collected
            from all EU farms.  In the 2020 census, the core will comprise 184 variables and
            will be supplemented by 30 variables in the module ‘Labour force and other
            gainful activities’, 15 in the module ‘Rural development’, and 70 in the module
            ‘Animal housing and manure management’, totalling 299. These are maximum
            numbers, as member states may transmit fewer variables if particular items do
            not exist or are not significant in the country concerned.
                 The  above  information  refers  to  the  absolute  numbers  of  variables  in
            2020.  Burden  reduction  should  be  assessed  throughout  2020-2026,  as  the
            data for the modules will be collected less frequently in the new decade (R10).
            Moreover, much burden reduction will be achieved in 2023 and 2026 by taking
            the previous regulation on permanent crops into account as well: in 2023, the
            IFS will collect a maximum of 470 variables, including the ‘Orchard’ module,
            whose predecessor  regulation contains over 650 variables, while in 2026 a
            maximum  of  350  variables  are  allowed,  including  the  ‘Vineyard’  module,
            whose  predecessor  regulation  contains  almost  900  variables  (R11).    In
            addition, the core and module system enables that fewer farms will have to
            provide  data on  all  variables  in  a  census  or  sample  year.  This  reduces  the
            burden on individual farms (R12).
                 Furthermore, the same list of variables and definitions, as well as common
            quality  standards  and  data  transmission  deadlines,  will  be  used  in  all  EU
            member states, increasing interoperability and reusability so as to reduce the
            costs and burdens of data collection (R13).

               An ESSnet project is a network of several ESS organisations which aims to provide results that
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            will be beneficial to the whole ESS.

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