The main purpose of the survey is to provide information on the views and behaviours of adults in Wales, covering a wide range of topics relating to them and their local area.
Prif ddiben yr arolwg yw rhoi gwybodaeth am farn ac ymddygiad oedolion Cymru, gan ymdrin â nifer o bynciau amrywiol sy'n ymwneud a nhw ac â’u hardal leol.