The approach suggests there could be a wide variation of children missing from the education data between local authorities, potentially between around 3.0% and 15.3%.
Mae’r ymagwedd yn awgrymu y gallai fod amrywiaeth eang o blant ar goll o’r data addysg rhwng awdurdodau lleol, o bosibl rhwng tua 3.0% a 15.3%.