88-220 Performance Chart Information, 1998

Here are the important statistics for plotting your performance on the charts you were given at the beginning of the semester. Please use this information wisely---if you find yourself getting into trouble, seek help now.

The normalized score, which is what you plot in the charts, is obtained by using the following equation: Normalized_Score = (Your_Score - Average) / Standard_Deviation. For each chart, plot your normalized score and connect neighboring dots. (For plotting, the location on the X-axis is the assignment, and the Y-Axis gives the normalized score.) From this information you should be able to easily spot trends. Are your normalized scores consistently good or bad? Are they tending to move up or down over time? Do they jump around a lot?

Homework Performance Chart
1. HW 1: average = 8.7 (median = 9.0) and std dev = 3.0.
2. HW 2: average = 7.1 (median = 7.0) and std dev = 2.6.
3. HW 3: average = 9.0! (median = 9.5) and std dev = 3.3.
4. HW 4: average = 7.9 (median = 9.0) and std dev = 2.3.
5. HW 5: average = 5.6 (median = 6.0) and std dev = 2.9.
6. HW 6: average = 8.4 (median = 8.5) and std dev = 3.2.
7. HW 7: average = 8.6 (median = 8.5) and std dev = 3.6.
8. HW 8: average = 6.6 (median = 6.0) and std dev = 3.2.
9. HW 9: average = 9.5! (median = 10.0) and std dev = 4.0.
Exam Performance Chart
1. EX 1: average = 158.0 (median 160.5) and std dev = 19.69.
2. EX 2: average = 126.6 (median 122.5) and std dev = 29.44.
Overall Performance Chart
1. PT 1: your score = hw1+hw2+hw3: average = 23.8 and std dev = 4.4.
2. PT 2: your score = 5 x (hw1+hw2+hw3) + ex1: average = 278.0 and std dev = 29.7.
3. PT 3 (midterm): your score = ((hw1+hw2+hw3+hw4)*5 + exam_1)/4.0: average = 78.9 and std dev = 8.4.
4. PT 4: your score = (hw1+hw2+hw3+hw4)*5 + exam_1 + exam_2: average = and std dev = .