Physics 271 - Fall 2009
Announcements (November 11, 2009)
the results of the Exam 2 are posted in Gradebook.
108 people took the exam, average number of questions answered correctly
was 10.3 out of 15 (69%) with standard deviaton of 2.5.
(problem number 16 had a typo in the correct answer and is therefore discarded)
here's the distribution:
1 col: # of questions answered correctly
2 col: # of people who got this # of questions correctly
3 col: # of people who got this or larger number of questions correctly
4 col: graphic representation of col 2.
0.0 0 0 +
1.0 1 1 +*
2.0 0 1 +
3.0 0 1 +
4.0 0 1 +
5.0 1 2 +*
6.0 6 8 +******
7.0 5 13 +*****
8.0 10 23 +**********
9.0 13 36 +*************
10.0 20 56 +********************
11.0 17 73 +*****************
12.0 13 86 +*************
13.0 9 95 +*********
14.0 12 107 +************
15.0 1 108 +*
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Reference