It will be important to consider the balance of cost, timeliness and usefulness of the information when making decisions about how frequently and at what level of detail to collect.
Bydd yn bwysig i ystyried cydbwysedd cost yr wybodaeth, ynghyd â pha mor amserol a defnyddiol ydyw, wrth wneud penderfyniadau am ba mor aml y dylid casglu gwybodaeth a pha mor fanwl y dylai fod.