Performance Overview
The First Hourly
Fall 2007
Score Distribution
There were 98 tests taken.
The mean score among the 98 tests was approximately 77.4%.
The lowest score among the 98 tests was 8%.
Approximately 90% of the scores were at 40% or more.
Approximately 75% of the scores were at 69% or more.
Approximately 70% of the scores were at 73% or more.
Approximately 60% of the scores were at 79% or more.
Approximately 50% of the scores were at 83% or more.
Approximately 40% of the scores were at 88% or more.
Approximately 30% of the scores were at 94% or more.
Approximately 25% of the scores were at 95% or more.
Approximately 13% of the scores were at 100%.
The highest score among the 98 tests was 100% - 13 of 98.
|
score |
frequency |
percent |
|
[0,60) |
15 |
15.31 |
|
[60,70) |
10 |
10.20 |
|
[70,80) |
16 |
16.33 |
|
[80,90) |
20 |
20.41 |
|
[99,100) |
24 |
24.49 |
|
100 |
13 |
13.27 |
|
Total |
98 |
100 |
|
score |
frequency |
percent |
|
[0,60) |
15 |
15.31 |
|
[60,70) |
10 |
10.20 |
|
[70,80) |
16 |
16.33 |
|
[80,90) |
20 |
20.41 |
|
[90,100] |
37 |
37.76 |
|
Total |
98 |
100 |
|
score |
frequency |
percent |
|
[0,70) |
25 |
25.51 |
|
[70,90) |
36 |
36.73 |
|
[90,100] |
37 |
37.76 |
|
Total |
98 |
100 |
Comments
Follow the protocol: show your work and details, write on one side of the sheets.
Attention to detail: Clean up your work, and watch the details. Clean up the arithmetic: “(1/4)*(1/2)” is not “1/6”; “(1/8)+(1/8)” is not “1/16”.
Major issues include:
Deficient knowledge of the definition of conditional probability;
Deficient knowledge of the definitions for the long run argument and for perfect samples;
Deficient knowledge of the computation of random variables;
Insufficient familiarity with the material in general.
If your first score is low: Remember the grading policy – if you don’t, look it up. The worst of the three test scores drop.
Remediation: the standard for performance is my keys – and not your neighbors’ tests. Do not shop for points with me. If your points do not add up, let me know. Compare your test work to my key – note where and why you lost points. Note the cases in which you lost the most points. Think of a revised tool-sheet, one that would prevent these problems form re-occurring. Write that tool-sheet.