12 13 8 9 12 10 14 10 11 9 10 10 9 10 10 11 9 7 8 9 10 11 12
12 13 8 9 12 10 14 10 11 9 10 10 9 10 10 11 9 7 8 9 10 11 12
7,8,9,10,11,12,13
7,8,9,10,11,12,13,
7 8 9 10 11 12 13
[(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]/[1/7-1/8
8 9 10 11 12
8,9,10,11,12
一知一组数据:7 12 11 10 13 8 7 9 14 8 11 10 10 9 12 8 10 13 9 11 则
已知一组数据9,7,13,10,11,8,10,14,8,12,9,11,13,7,10,9,12,11,10,8,则落
8 9 10 11 12 13
已知样本7,10,14,8,7,12,11,10,8,10,13,10,8,11,8,9,12,9,13,12,那么样本
(9+10+11/8-10+11+12/9+11+12+13/10-12+13+14/11)/(1/8-1/9+1/10