1.求平均数：41, 38, 8, 40, 42, 47, 14, 58

2.求平均数：28, 52, 42, 29, 29

3.求平均数：47, 6, 11, 53, 39, 9, 48, 43

4.求平均数：40, 59, 9, 41, 41

5.求平均数：27, 14, 47, 9, 25, 36, 19, 15

6.求平均数：41, 30, 36, 52, 35, 22, 43

7.求平均数：39, 39, 57, 40, 10, 19

8.求平均数：28, 4, 35, 35, 38

9.求平均数：24, 26, 28, 18, 8, 42, 57

10.求平均数：29, 54, 59, 56, 25, 17

11.求平均数：52, 54, 22, 58, 47, 27, 41

12.求平均数：38, 5, 5, 29, 22, 47, 43

13.求平均数：25, 9, 46, 37, 47, 52

14.求平均数：7, 45, 35, 59, 15, 9, 12

15.求平均数：3, 7, 11, 30, 13, 2