根据相关标准,六年级男生50米短跑合格成绩为10.5秒,把成绩超过10.5秒的部分用正数表示,不到10.5秒的部分用负数表示。某组6名男生的50米短跑成绩如下表:单位:秒

(1) 这一组几号同学50米短跑成绩最好?他用时多少?
(2) 这组同学50米短跑成绩不合格的人数是总人数的几分之几?
(3) 从这些数据分析中,你还能得出其它信息吗?
According to the relevant standards, the passing time for the 50-metre sprint for Year 6 boys is 10.5 seconds; any time exceeding 10.5 seconds is expressed as a positive number, whilst any time under 10.5 seconds is expressed as a negative number. The 50-metre sprint times for a group of six boys are shown in the table below: Unit: seconds
(1) Which pupil in this group achieved the best 50-metre sprint time? How long did it take him?
(2) What fraction of the total number of pupils in this group failed the 50-metre sprint?
(3) Can you deduce any other information from an analysis of these data?