Mejemeriya wutetu yitaremal hulum subject, ena eyandandu wede 100 yimelesal, let say maths ke 60 tiyake 50 ametash enibel, so yihe ke 60 , 50 kametach ke meto snt new tebilo yiseral, eyandandu subject bendezi aynet ketesera bewala hulum tedemiro le fetenaw bizat yikafelal maletim le subjectochu bizat yikafelal, tekaflo yemetawm wutet average yibalal, kza bewala be kililu ketefetenut temariwoch antsar yametashiw average sitay mn yakil % temari beletsh tebilo be percent mikemetew dmo percentile yibalal, le misale 99 bihon percentilish, be kililu ketefetenut temariwoch wust 99 % kemihonut belay amtiteshal malet new, weyim dmo 99% yemihonut temariwoch kanchi betach amtitewal endemalet new!!