Exams will be returned in class this coming Tue after the break.
K. Zhang  graded this exam. You may make a copy of the exam but
you must return it to the instructor by April 6.


A. Exam 1 (100pts max in 1hr)      and 
   Exam 2 (350pts max in 1hr45min) statistics

        #  Aver   SDev  Median  Range
Ex1  : 48, 67.10  15.04  66     0-100
Ex2  : 46  241.02 42.78 245     0-350
Ex1+2: 49  292.00 79.63 312     0-450

Aver: Average
SDev: Standard Deviation


B. Midterm Class Performance

If G= EX1 + EX2 grades and

 G in
350-450    about A
310-350    about B+
270-310    about B
240-270    about C+
220-240    about C
200-220    about D
0  -200    F