On average younger people have lower wellbeing: those aged 16 to 24 have a score of 47.4, compared with a score of 51.1 for those aged 65 and over.
Ar gyfartaledd, mae lles pobl ifanc yn is: mae gan bobl rhwng 16 a 24 oed sgôr o 47.4, o gymharu â sgôr o 51.1 i bobl 65 oed a throsodd.