Sample size An achieved sample of around 1,000 respondents a month, except for the first month (May 2020) when 3,000 interviews were achieved.
Maint y sampl Llwyddir i gyrraedd at sampl o tua 1,000 o ymatebwyr y mis, ac eithrio’r mis cyntaf (Mai 2020) pan wnaed 3,000 o gyfweliadau.