The Survey on the linguistic uses of the 2018 population is an official statistical activity integrated in the corresponding Annual Statistical Action Program that unfolds the Statistical Plan Law of Catalonia 2017-2020
OPINOMETRE has been accredited with the UNE-ISO 9001 standard for the activity of Conducting surveys and market studies and UNE-ISO 20252 for the activity of Conducting market, mobility and opinion studies, certified by APPLUS and the Code of Conduct CCI/ESOMAR and Insights+ Analytics Spain