The following statistics and letter-grade cutoffs were computed after excluding outliers above 95% and below 25%. (Gradescope reports slightly higher averages, in part because it does not exclude these outliers.) These statistics include only the regular version of the exam. Raw grades listed below have been rounded down to the nearest ¼ point.
| Problem | #1 | #2 | #3 | #4 | #5 | Total | |
|---|---|---|---|---|---|---|---|
| Mean | 8.17 | 5.91 | 6.52 | 7.21 | 4.24 | 32.06 | |
| Stdev | 2.13 | 3.69 | 3.79 | 2.92 | 3.36 | 8.77 |
| A | 50 50 50 50 50 49½ 49 49 49 49 48½ 48 48 48 48 48 4847 47 47 47 47 46½ 46½ 46½ 46 46 46 46 46 46 46 46 45 45 45 45 45 44½ 44½ 44 44 43½ 43 43 43 43 43 42 42 42 42 42 42 41½ 41½ 41 41 40½ 40½ 40½ 40½ 40½ |
|---|---|
| B | 40 40 40 40 40 40 40 40 40 40 40 39½ 39½ 39½ 39½ 39½ 39½ 39½ 39 39 39 39 39 39 38½ 38½ 38½ 38¼ 38 38 38 38 38 38 38 38 38 37¾ 37½ 37½ 37 37 37 37 36¾ 36½ 36½ 36½ 36 35½ 35½ 35½ 35¼ 35 35 35 35 35 35 35 35 35 34½ 34½ 34½ 34½ 34½ 34½ 34½ 34 34 34 34 34 33 33 33 33 32½ 32½ 32½ 32½ 32½ 32½ 32¼ |
| C | 32 32 32 32 32 31½ 31½ 31½ 31½ 31½ 31¼ 31¼ 31 31 31 31 31 31 31 31 31 31 31 30½ 30½ 30½ 30 30 30 30 29½ 29½ 29½ 29½ 29 29 29 29 29 29 28½ 28½ 28½ 28½ 28 28 28 28 28 27¼ 26½ 26½ 26½ 26½ 26½ 26½ 26½ 26½ 26¼ 26 26 25½ 25½ 25½ 25½ 25½ 25½ 25¼ 25 25 24¾ 24½ 24½ 24½ 24½ 24½ 24 24 23½ 23½ 23½ 23½ 23½ |
| D | 23 23 23 22½ 22 22 22 22 22 21½ 21½ 21 21 21 21 20½ 20 19½ 19½ 19 19 18 18 17½ 17½ 17½ 17½ 16½ 16½ 16½ 16 16 15½ 15½ 15 15 15 15 15 15 14¾ |
| F | 14½ 14 13½ 13½10½ 10½ 10½ 10 8½ 7½ 7½ 7 6½ 6 5 |
Here is the grade distribution for both midterms combined. The raw totals include only students who took both regular midterms, and they have all been rounded down to the nearest ½ point. Letter grade cutoffs are based on a mean (±stdev) of 62.55 (±16.36), determined by the students who took both regular midterms, excluding outliers at both ends of the curve as usual.
| A | 97½ 9594½ 94½ 93½ 93 93 93 92½ 92½ 91 91 91 91 9089½ 89½ 89½ 89 88½ 88½ 88½ 88½ 87½ 85½ 85 84½ 84½84 83½ 83½ 83½ 83 83 83 83 82 82 81½ 81½ 81½ 81 81 80½ 80½ 80½ 80½ 80 80 80 80 80 79½ 79½ 79 79 |
|---|---|
| B | 78½ 78½ 78 78 77½ 77½ 77½ 77 77 76½ 76 75½ 75½ 75 75 75 75 74½ 74½ 74 74 73½72½ 72½ 72½ 72½ 72½ 72½ 72 72 71½ 71½ 71½ 71 71 71 70½ 70½ 70 70 70 70 70 70 69½ 69½ 69½ 69 6968 68 68 68 67½ 67½ 67 67 67 67 67 66½ 66½ 66½ 66 66 66 65½ 65½ 65 65 64½ 64½ 64 63½ 63½ 63½ 63½ 63 63 63 63 62½ 62½ |
| C | 62 62 62 62 61½ 61 61 61 61 61 61 61 60 60 59½ 59½ 59½ 59 59 59 59 59 59 59 58½ 58½ 58½ 58½ 58½ 58 57½ 57½ 57½56½ 56½ 56½ 56 56 55½ 55½ 55½ 55½ 55 54½ 54 54 54 53½ 53½ 53½ 53 53 53 53 52½ 52½ 52½ 52½ 52½ 52½ 52 52 5251½ 51½ 51 51 50½ 50½ 50 50 50 49½ 49 48½ 48½ 48½ 48 48 47½ 47½ 47½ 47½ 47 46½ 46½ 46½ |
| D | 46 46 46 45½ 45½ 45 44½ 44 44 44 43½ 43½ 43½ 43½ 43 42 42 41½ 41½ 41½ 41 4140½ 40 39½ 39½ 39½ 39½ 39½ 39 39 39 38½ 36½ 36½ 36½ 36 35½35 34 33 33 32½ 31½ 31 31 30 30 |
| F | 29 27½ 25½21½ 21 19 17 |
Please keep in mind that these letter grades are still very rough predictions of your final course grade, based on only 40% of your overall coursework. Past experience suggests that most students‘ final course grades will be within one letter grade of these estimates, but differences of up to a full letter grade (in either direction) are fairly common.
Finally, here is a scatterplot of Midterm 1 scores versus Midterm 2 scores, normalized to lettergrade boundaries. This data includes only students who took both regular midterms, including outliers.
The following statistics and letter-grade cutoffs were computed after excluding outliers above 95% and below 25%. (Gradescope reports slightly higher averages, in part because it does not exclude these outliers.) These statistics include only the regular version of the exam. Raw grades listed below have rounded down to the nearest ¼ point.
| Problem | #1 | #2 | #3 | #4 | #5 | Total | |
|---|---|---|---|---|---|---|---|
| Mean | 6.69 | 4.92 | 6.45 | 5.84 | 5.10 | 28.90 | |
| Stdev | 2.13 | 2.69 | 2.33 | 1.93 | 3.31 | 8.08 |
| A | 49½ 48½ 48 47½ 47½46 45½ 45½ 45 45 45 44½ 44½ 44½ 44 44 44 43½ 43½ 43½ 43¼ 43 42¾ 42¾ 42¾ 42½ 42½ 42½ 42 42 42 41¾ 41¾ 41½ 41¼ 41 40½ 40½ 40¼ 40 40 40 39½ 39½ 39½ 39½ 39¼ 39¼ 39 39 39 38¾ 38½ 38¼ 38¼ 38 37¾ 37¾ 37¾ 37 37 37 37 |
|---|---|
| B | 36¾ 36½ 36½ 36 36 35¾ 35¾ 35¾ 35¾ 35½ 35½ 35½ 35¼ 35¼ 35 35 35 34¾ 34½ 34½ 34¼ 34¼ 34¼ 34 34 34 34 34 33¾ 33½ 33½ 33¼ 33¼ 33¼ 33¼ 33 33 33 33 33 33 32¾ 32½ 32½ 32½ 32¼ 32 32 32 31¾ 31½ 31½ 31½ 31½ 31½ 31¼ 31¼ 31¼ 31 31 30¾ 30¾ 30¾ 30½ 30½ 30½ 30½ 30¼ 30¼ 30¼ 30 30 30 29¾ 29¾ 29¾ 29¾ 29½ 29½ 29½ 29½ 29¼ 29¼ 29¼ 29¼ 29¼ 29¼ 29 28¾ |
| C | 28¾ 28¾ 28¾ 28½ 28½ 28½ 28½ 28¼ 28¼ 28¼ 28¼ 28 28 28 28 28 28 28 28 28 27¾ 27½ 27½ 27¼ 27¼ 27¼ 27¼ 27 27 27 27 27 26¾ 26¾ 26¾ 26¾ 26¾ 26½ 26½ 26½ 26½ 26½ 26¼ 26¼ 26¼ 26¼ 26¼ 25¾ 25¾ 25½ 25½ 25¼ 25¼ 25¼ 25 25 25 25 25 25 24¾ 24¾ 24¾ 24¾ 24¾ 24¾ 24¾ 24½ 24½ 24¼ 24¼ 24¼ 24¼ 24 23¾ 23¾ 23¾ 23¾ 23½ 23½ 23½ 23½ 23½ 23¼ 23¼ 23¼ 23 23 22¾ 22¾ 22¾ 22¾ 22¾ 22¾ 22¾ 22¾ 22 22 21¾ 21½ 21½ 21½ 21¼ 21¼ 21¼ 21 21 21 21 21 |
| D | 20¾ 20¾ 20¾ 20½ 20½ 20¼ 20¼ 20¼ 20¼ 20 20 20 20 19¾ 19½ 19¼ 19¼ 19 19 18½ 18½ 18½ 18½ 18¼ 18 18 18 18 17¾ 17¾ 17¼ 17¼ 17 17 16¾ 16½ 16½ 16¼ 16¼ 16¼ 16¼ 16¼ 16 15¾ 15 15 14¾ 14½ 14 14 13¼ 12¾ 12¾ |
| F | 12½ 12½12¼ 12 12 11 11 10¾ 10½ 10½ 10 9 9 9 |
Please keep in mind that these letter grades are extremely rough predictions of your final course grade, based on only 20% of your overall coursework. Past experience suggests that most students‘ final course grades will be within one letter grade of these estimates, but differences of up to a full letter grade (in either direction) are quite common, and there are a few differences of two letter grades or more (in either directions) every semester.
Students are strongly encouraged to come talk with Jeff before dropping the class. Jeff will be available Thursday 1-4 and Friday 9-12 and 1-5, specifically for students who are thinking of dropping the class and/or are seriously concerned about their midterm performance.
