Njureef yi ngir done x
Njureef yii am nañu ci mod statistik bu nekk. Ngir wone benn, bësal RCL ak butoŋam bu wert; ngir jëfandikoo ko ci formil, bësal ALPHA ak butoŋ bi. x bar mooy moyennu x, ci kaw butoŋu 4. s x mooy ekaar-tipu esantiyoŋ bi, ci kaw 5, te sigma x mooy ekaar-tipu populaasioŋ bi, ci kaw 6. n, ci kaw 0, mooy limu done yi. Mboolem x, ci kaw butoŋu tomb bi, mooy mboolem lim yépp, te mboolem x kaare, ci kaw yokk-wàññi, mooy mboolem seeni kaare.