All Scores

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.
  39.00   68.50   86.00   79.31   94.00  100.00

   3 | 9
   4 | 11
   4 | 7
   5 | 034
   5 | 67
   6 | 13
   6 | 679
   7 | 0022333
   7 | 5
   8 | 03
   8 | 557999
   9 | 0000022344
   9 | 55677
  10 | 0000000

Grad Students Only

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.
  54.00   87.00   90.00   88.29   95.00  100.00

   5 | 4
   5 |
   6 |
   6 | 9
   7 | 2
   7 | 5
   8 |
   8 | 5799
   9 | 0002344
   9 | 56
  10 | 0000

Undergraduates Only

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.
  39.00   59.00   73.00   73.23   90.00  100.00

   3 | 9
   4 | 11
   4 | 7
   5 | 03
   5 | 67
   6 | 13
   6 | 67
   7 | 002333
   7 |
   8 | 03
   8 | 59
   9 | 002
   9 | 577
  10 | 000

Problem 1

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.
   0.00   15.75   20.00   16.96   20.00   20.00

  0 | 0
  0 | 559
  1 | 0000
  1 | 555556677777777
  2 | 00000000000000000000000000000

Problem 2

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's
  10.00   16.00   20.00   17.92   20.00   20.00    2.00

  10 | 000
  12 | 0000
  14 | 00
  16 | 00000000
  18 | 000
  20 | 00000000000000000000000000000000

Problem 3

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's
   5.00   13.00   16.00   15.58   20.00   20.00    2.00

  0 | 557899
  1 | 0000333333333333
  1 | 5555777
  2 | 00000000000000000000000

Problem 4

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's
   0.00    7.00   15.00   13.23   20.00   20.00    2.00

  0 | 0003
  0 | 55555555777779
  1 | 0000334
  1 | 55777
  2 | 0000000000000000000000

Problem 5

   Min. 1st Qu.  Median    Mean 3rd Qu.    Max.    NA's
   5.00   13.00   17.00   15.62   20.00   20.00    2.00

  0 | 555588
  1 | 0011233334444
  1 | 555557777777
  2 | 000000000000000000000