Struktura poljoprivrednih gazdinstava - midas

Popis poljoprivrede 2010 Agricultural Census 2010One should use the source considered to be the most reliable for each element in thecalculation.Evaluation and choice of a data source before calculation (a priori assessment)The decisions concerning the choices of data sources are to be made case by case. Eachdata source has its strengths and weaknesses, and the one which seems to be the mostreliable has to be picked out for the parameter needed. Even if a certain source contains agreat number of figures, in practice it can not be used for every figure required, since it is notequally reliable throughout the data set.Evaluation of a data source after calculation (a posteriori assessment)Often it is impossible to evaluate a priori how relevant or representative a source is. If it is theonly source available, it has to be used even if it is not very good.The most frequent, but also the trickiest case, is when two rival sources are giving differentresults but no clear distinction emerges from a priori evaluation. A posteriori criteria have tobe used afterwards to validate the use of one or the other source:• Impact on the classification of the farms (by type of farming and economic size)• Experts' advice• Comparison between SO coefficients for the same characteristic in different regions: is theranking between the regions realistic?• Comparison with FADN results or with the EAA.What can be done if no data source is available?Sometimes it is difficult to find the data needed for a SO calculation in existing data sources,especially if that specific data is rare or is not often used. In that case the following advicesmay be useful:• Check if these specific data exist in neighbour regions or neighbour countries and if it couldbe used and how• If possible draw a specific survey for example next to the farmers belonging to theFADN• Consult experts; make a list of contact people and ask their opinionConclusionSO coefficients are mainly used to calculate the typology, i.e. to classify the farms. Thisclassification is used to display the results of the FSS and the FADN, to weight the FADNresults and to facilitate the analyses and comparison between Member States. The SO canalso be used by the Member States as indicators.Therefore, despite the available data sources are only rarely beyond reproach, the MemberStates should ensure that the SO coefficients have been calculated with due care, that theyare realistic and robust results.Zavod za statistiku Crne Gore 26 Statistical Office of Montenegro