Rhan ganolog o’r gwaith fydd cysylltu data Cyfrifiad 2021 â data arolygon yr ONS drwy’rGwasanaeth Data Integredig. Bydd y prosiect cysylltu data arloesol hwn—un o’r prosiectau cyntaf i ddefnyddio’r Gwasanaeth Data Integredig—yn ein galluogi i ddysgu rhagor am y grwpiau o bobl sy’n ymateb yn wahanol am eu gallu yn y Gymraeg rhwng y cyfrifiad ac arolygon yr ONS.
A key part of this work is to link Census 2021 data to ONS survey data via theIntegrated Data Service(IDS). This innovative data linking project, one of the first projects to use the IDS, will allow us to learn more about the groups of people who respond differently between the census and ONS surveys about their Welsh language ability.