quiz grades for groupC                          avg
3533-639 14 19  7 21                            18.00
2518-706 10 16  7  2                            11.00
4723-827  1 20  0  3                             8.00
3778-872 13 14  0 13                            13.33
4955-517  0  0  0  0                             0.00
1683-522  1  0  0  0                             0.33
1708-436 25 25 24 25                            25.00
7789-724  0 24  7  1                            10.67
2529-571 12  7  0  0                             6.33
7456-079  7 20  0  0                             9.00
5830-969 17 12  0  0                             9.67
6381-246  0  0  0  0                             0.00
8388-635 13 12  7  6                            10.67
2889-327 12 14 14 19                            15.67
4755-733 19 22 15  9                            18.67
6210-924 23 23  0 10                            18.67
7052-443  0  0  0  0                             0.00
8849-497 10  0  0  0                             3.33
4669-629 17 15  2  0                            11.33
4729-825 12 25 10 10                            15.67
0473-589  0  0  0 12                             4.00
the average was computed with  1 drop