The proportion of working age adults with no qualifications was highest in Merthyr Tydfil (20.1%) and Blaenau Gwent (15.3%) and lowest in Ceredigion (2.8%) and Monmouthshire (3.0%).
Mae’r gyfran o oedolion o oedran gweithio heb gymwysterau yn uchaf ym Merthyr Tudful (20.1%) a Blaenau Gwent (15.3%), ac yn isaf yng Ngheredigion (2.8%) a Sir Fynwy (3.0%).