Statistics for Exam 2, 21 October, 1998

Variable        N     Mean   Median   TrMean    StDev   SEMean
Exam 2        100   126.61   122.50   126.47    29.44     2.94
 
Variable      Min      Max       Q1       Q3
Exam 2      62.00   190.00   106.25   146.75

 
Histogram of Exam 1r   N = 100
 
Midpoint   Count
      60       1  *
      70       2  **
      80       4  ****
      90       6  ******
     100       9  *********
     110      14  **************
     120      16  ****************
     130       8  ********
     140      13  *************
     150       6  ******
     160       9  *********
     170       5  *****
     180       5  *****
     190       2  **
 
Character Stem-and-Leaf Display
 
 
Stem-and-leaf of Exam 1r   N  = 100
Leaf Unit = 1.0
 
 
    3    6 269
    4    7 8
   11    8 0146889
   18    9 236

         9 7889
   28   10 0012566778
   48   11 001

        11 33344555666778899
   (7)  12 1234558
   45   13 00344556677899
   31   14 00

        14 23567
   24   15 02288889

   16   16 12336678
    8   17 259
    5   18 2246
    1   19 0

Thus, to gauge your performance:

160 >=  Excellent
142 >=  Good
112 >=  OK
97  >=  Poor
97  <  Very Poor