 <translate> Obere afọ = Nkezi - 1 Standard deviation = 10 - 8 = 2 Afọ ndụ kacha elu = nkezi + 1 Standard deviation = 10 + 8 = 18 Ọnụ ọgụgụ kachasị elu nke ndị na-arịọ arịrịọ dị iche iche = 18 - 2 + 1 = 17 <hau> Mafi ƙarancin shekaru = Matsakaici - 1 Rashin daidaituwa = 10 - 8 = 2 Matsakaicin shekaru = matsakaici + 1 Rashin daidaituwa = 10 + 8 = 18 Matsakaicin adadin masu neman shekaru daban-daban = 18 - 2 + 1 = 17 