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

Wednesday, August 01, 2007