Survey on environmental protection studies and investments 2020
Antipol 2020
Antipol 2020
Consulter
Sommaire
Gestion de la qualité
Quality assurance
The different stages of the survey ensure that the process meets the requirements for statistical production:
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stratified sample selection
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reminders and checks of data being collected
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clearance
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adjustment for total non-response
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shimming
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adjustment for partial non-response
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winsorisation (control of the influence of atypical units)
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the questionnaire was tested (in the 4th quarter 2012) as part of the survey's appearance before the label committee in early 2013.