Wednesday, August 22, 2007
Short Introduction to Political Analysis
Those in my graduate class should be familiar with the material covered in this post.
Monday, August 06, 2007
Summary Statistics for Exam 2
The results are in for the second exam, and here are some brief summary statistics:
Total Number of Exams: 19
Mean score: 75.79
Modes: 74 (3 exams), 76 (3 exams) and 88 (3 exams)
Range: 54 to 88 (the full description is below)
CURVE: There is no curve for this test.
NOTE(!): I regressed the effect of attendance on overall grade for the exam. After controlling for several other factors, missing one class decreased a test score by over 3 points, on average. Attendance matters!
. tab test2
test2 | Freq. Percent Cum.
------------+-----------------------------------
54 | 1 5.26 5.26
66 | 1 5.26 10.53
68 | 1 5.26 15.79
70 | 2 10.53 26.32
72 | 1 5.26 31.58
74 | 3 15.79 47.37
76 | 3 15.79 63.16
78 | 1 5.26 68.42
82 | 2 10.53 78.95
84 | 1 5.26 84.21
88 | 3 15.79 100.00
------------+-----------------------------------
Total | 19 100.00
Total Number of Exams: 19
Mean score: 75.79
Modes: 74 (3 exams), 76 (3 exams) and 88 (3 exams)
Range: 54 to 88 (the full description is below)
CURVE: There is no curve for this test.
NOTE(!): I regressed the effect of attendance on overall grade for the exam. After controlling for several other factors, missing one class decreased a test score by over 3 points, on average. Attendance matters!
. tab test2
test2 | Freq. Percent Cum.
------------+-----------------------------------
54 | 1 5.26 5.26
66 | 1 5.26 10.53
68 | 1 5.26 15.79
70 | 2 10.53 26.32
72 | 1 5.26 31.58
74 | 3 15.79 47.37
76 | 3 15.79 63.16
78 | 1 5.26 68.42
82 | 2 10.53 78.95
84 | 1 5.26 84.21
88 | 3 15.79 100.00
------------+-----------------------------------
Total | 19 100.00
Wednesday, August 01, 2007
Class Notes -- Chapter 12 (Domestic Institutions and National Performance)
Here are notes for part of today's class.
Tuesday, July 31, 2007
Wednesday, July 25, 2007
Summary Statistics for Exam 1
The results are in for the first exam, and here are some brief summary statistics:
Note that your test has several numbers. The first number represents your total points on the multiple choice (out of 100). The second number is your total for the identify (out of 20). The sum of those two numbers is your raw score for the test (out of 120). I added 10 points to everyone's test, so your final grade is the raw score, plus 10 points, divided by 120. (NOTE: If you participated in the simulation, you should add 12 points to the raw score and then divide by 120.)
Total Number of Exams: 21
Mean score: 94.7
Modes: 98 (2 exams) and 102 (2 exams)
Range: 115 to 65 (the full description is below)
CURVE: These statistics include a 10 point curve that I added.
NOTE(!): I regressed the effect of attendance on overall grade for the exam. After controlling for several other factors, missing one class decreased a test score by almost 7 points, on average. Thus, if a student misses four classes, then student is likely to score an 72, AFTER the curve, holding everything else constant. Attendance matters!
Note that your test has several numbers. The first number represents your total points on the multiple choice (out of 100). The second number is your total for the identify (out of 20). The sum of those two numbers is your raw score for the test (out of 120). I added 10 points to everyone's test, so your final grade is the raw score, plus 10 points, divided by 120. (NOTE: If you participated in the simulation, you should add 12 points to the raw score and then divide by 120.)
Total Number of Exams: 21
Mean score: 94.7
Modes: 98 (2 exams) and 102 (2 exams)
Range: 115 to 65 (the full description is below)
CURVE: These statistics include a 10 point curve that I added.
NOTE(!): I regressed the effect of attendance on overall grade for the exam. After controlling for several other factors, missing one class decreased a test score by almost 7 points, on average. Thus, if a student misses four classes, then student is likely to score an 72, AFTER the curve, holding everything else constant. Attendance matters!
examgrade | Freq. Percent Cum.
------------+-----------------------------------
65 | 1 4.76 4.76
71 | 1 4.76 9.52
76 | 1 4.76 14.29
86 | 1 4.76 19.05
87 | 1 4.76 23.81
89 | 1 4.76 28.57
90 | 1 4.76 33.33
94 | 1 4.76 38.10
95 | 1 4.76 42.86
96 | 1 4.76 47.62
98 | 2 9.52 57.14
99 | 1 4.76 61.90
100 | 1 4.76 66.67
102 | 2 9.52 76.19
103 | 1 4.76 80.95
104 | 1 4.76 85.71
107 | 1 4.76 90.48
112 | 1 4.76 95.24
115 | 1 4.76 100.00
------------+-----------------------------------
Total | 21 100.00
Tuesday, July 24, 2007
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