Homework #2

Please be aware that the due date for homework #2 is March 11, not February 11.

For those of you who were not in class on Friday, a copy of the assignment has been placed on the I-drive.

Remember: Your next test is Friday, March 13.

Participation credit

I was quite disturbed that attendance was so low today. Everyone who was in class today received one point of participation credit. Thanks to those who showed up.

Scores from Test 1

The following information is useful in interpreting your score on the first test (Feb 6).

average = 17.25 out of 25 (69%)
median = 17 (68%)
mode = 17 (68%)
stdev = 2.9 (11.7%)

The mean is rather low (target 80%), the standard deviation is slightly high (target 10%).
It appears the test was difficult for many of you, but with top scores of 24 and 23, the test does not appear unfair.

The following scale should be used merely as a guide for interpretation. I do not record grades, only raw scores (frequencies in parentheses) .

A: 20 and up (6)
B: 17 - 19.5 (14)
C: 14-16.5 (10)
D: 11 - 13.5 (3)
F: 10.5 and lower (0)

Note: problem 14 was tossed out due to sloppy wording. If you received a +1 on your score it was because it was initially marked incorrect. If you don't have a +1 on your score it was already counted as correct.

Good luck with future studying.

Answer Key to Sample MC Questions for Test 1

I'm lazy. I think the practice problems were the same ones I used for last year. And I think this is the key. Let me know if you think anything is wrong or if it is the wrong key.

1-D, 2-C, 3-A, 4-D, 5-A, 6-D,
7-A, 8-C, 9-D, 10-C, 11-C, 12-A, 13-D,
14-D, 15-C, 16-C, 17-D