However, it needs to be borne in mind that whilst amending the wording and presentation of the questions can aid clarity, it can also impact on the consistency of how numbers are reported.
Fodd bynnag, er bod newid geiriad y cwestiynau a’r ffordd y cânt eu cyflwyno yn gallu helpu o ran eglurder, mae angen cofio bod hynny hefyd yn gallu effeithio ar gysondeb wrth adrodd ar niferoedd.