[ 2 ] Survey estimates themselves (as opposed to the standard errors and confidence intervals for those estimates) are not affected by the survey design.
[ 2 ] Ni chaiff amcangyfrifon yr arolwg (o’u cymharu â’r gwallau safonol a’r cyfyngau hyder ar gyfer yr amcangyfrifon hynny) eu heffeithio gan ddyluniad yr arolwg.