Quiz # 6 has been graded. The statistics (after some regrading of Problem #
1) are as follows:

highest score: 69 %
mean score: 31.86 %
lowest score: 6 %

Before regrading Problem # 1, the scores were even lower, i.e., 65, 29.71
and 6 %. Regardless at which numbers one looks, they are a real disaster.
Such low scores did not occur in any quiz last year and I hope that we will
not see any such low scores again this semester in any quiz.

pfft