quiz grades for groupB                          avg
6611-051  5 14  0  2                             7.00
7887-782 10 18 16  9                            14.67
7493-721 17 23 20 22                            21.67
6562-072 25 21  9 15                            20.33
9303-028  7 21 13 24                            19.33
3000-748 25 25 21  0                            23.67
8241-041 19 24 14 18                            20.33
7659-799 25 25 25 25                            25.00
6078-762  3 14  0  4                             7.00
9943-910 19 24  8 16                            19.67
6512-207  3 24 16 24                            21.33
3175-117 25 24 19 25                            24.67
1913-777 15 21 14 22                            19.33
8161-231 14 17  0  3                            11.33
2709-334 11  0  0  0                             3.67
3314-944 25 20  0 10                            18.33
3238-329  0  0  0  0                             0.00
9367-033  0 12  8  0                             6.67
7942-033  4 19  0  0                             7.67
1416-517 13 19 12 17                            16.33
0487-088 25 23 25 25                            25.00
the average was computed with  1 drop