45 Midterm statistics

45 Midterm statistics - mean then your curved score will...

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Handout #45 CS103 May 12, 2010 Robert Plummer CS103 Midterm Statistics--Spring 2010 Here are some statistics from the midterm: Mean: 73.3 Median: 75 Std Dev: 15.0 Average score for each problem (in percent): 1 66.9 2 6 6 . 5 3 6 3 . 9 4 8 9 . 3 5 7 9 . 6 Histogram of raw scores: CS103 Midterm Spring 2010 0 5 10 15 20 25 30 21-25 26-30 31-35 36-40 41-45 46-50 51-55 56-60 61-65 66-70 71-75 76-80 81-85 86-90 91-95 96-100 Grade Range (Raw Scores) Number of Students The mean score will be curved to an 87. That means that if your raw score is below the
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Unformatted text preview: mean, then your curved score will be (raw score) + 13.7. If your score is above the mean, you will receive a declining percentage of 13.7 points depending on how near you are to 100: 7 . 13 100 100 mean rawscore rawscore e curvedscor For example, 84 curves to 92.2. Letter grades are not assigned to exams, but the normal interpretation is a good guideline: the 'A' range is 90-100, the 'B' range is 80-89, etc....
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This document was uploaded on 02/08/2011.

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