Econ 120B, Spring 1998 Added 13 points to score #4 SCORE MEAN S.D. MIN LQ MEDIAN UQ MAX ADJ AVG 83 9 51 78 85 90 98 AVG 81 10 49 76 83 88 98 1 98 6 55 100 100 100 100 2 43 6 13 42 45 48 50 3 43 6 7 40 44 46 50 4 47 10 20 40 47 54 70 5 41 8 7 38 44 47 50 6 67 10 34 60 69 74 80 Frequency distribution for Adjusted weighted Score (without bonus points for typos and honors, or pushing up marginal cases) Gr Intervals midpt Freq A+ >= 99 99.95 0 A 95 - 98.9 96.95 6 A- 90 - 94.9 92.45 45 ****** B+ 85 - 89.9 87.45 53 ******* B 80 - 84.9 82.45 33 **** B- 75 - 79.9 77.45 24 *** C+ 70 - 74.9 72.45 15 ** C 65 - 69.9 67.45 14 ** C- 50 - 64.9 57.45 11 * D 40 - 49.9 44.95 0 F <= 39.9 20.45 0 Total 201 Frequency distribution for Adjusted weighted Score (after applying bonus points and pushing some marginal people up) Gr Intervals midpt Freq A+ >= 99 99.95 2 A 95 - 98.9 96.95 21 *** A- 90 - 94.9 92.45 48 ******* B+ 85 - 89.9 87.45 45 ****** B 80 - 84.9 82.45 34 ***** B- 75 - 79.9 77.45 17 ** C+ 70 - 74.9 72.45 17 ** C 65 - 69.9 67.45 10 * C- 50 - 64.9 57.45 7 * D 40 - 49.9 44.95 0 F <= 39.9 20.45 0 Total 201 Frequency distribution for Weighted Score (Max = 100, Weight = 100) Gr Intervals midpt Freq A+ >= 99 99.95 0 A 95 - 98.9 96.95 3 A- 90 - 94.9 92.45 31 **** B+ 85 - 89.9 87.45 52 ******* B 80 - 84.9 82.45 31 **** B- 75 - 79.9 77.45 36 ***** C+ 70 - 74.9 72.45 17 ** C 65 - 69.9 67.45 15 ** C- 50 - 64.9 57.45 15 ** D 40 - 49.9 44.95 1 F <= 39.9 20.45 0 Total 201 Frequency distribution for Score 1 (Max = 100, Weight = 5) HW #1 Gr Intervals midpt Freq A+ >= 99 99.95 174 ************************ A 95 - 98.9 96.95 0 A- 90 - 94.9 92.45 15 ** B+ 85 - 89.9 87.45 2 B 80 - 84.9 82.45 0 B- 75 - 79.9 77.45 4 C+ 70 - 74.9 72.45 1 C 65 - 69.9 67.45 1 C- 50 - 64.9 57.45 1 D 40 - 49.9 44.95 0 F <= 39.9 20.45 17 ** Total 215 Frequency distribution for Score 2 (Max = 50, Weight = 5) HW #2 Gr Intervals midpt Freq A+ >= 50 50.45 18 ** A 48 - 49.9 48.95 34 **** A- 45 - 47.9 46.45 54 ******* B+ 43 - 44.9 43.95 41 ***** B 40 - 42.9 41.45 16 ** B- 38 - 39.9 38.95 8 * C+ 35 - 37.9 36.45 9 * C 33 - 34.9 33.95 2 C- 25 - 32.9 28.95 15 ** D 20 - 24.9 22.45 3 F <= 19.9 10.45 15 ** Total 215 Frequency distribution for Score 3 (Max = 50, Weight = 5) Hw #3 Gr Intervals midpt Freq A+ >= 50 50.45 4 A 48 - 49.9 48.95 9 * A- 45 - 47.9 46.45 76 *********** B+ 43 - 44.9 43.95 28 **** B 40 - 42.9 41.45 39 ****** B- 38 - 39.9 38.95 10 * C+ 35 - 37.9 36.45 20 *** C 33 - 34.9 33.95 2 C- 25 - 32.9 28.95 2 D 20 - 24.9 22.45 0 F <= 19.9 10.45 3 Total 193 Frequency distribution for Score 4 (Max = 70, Weight = 20) Exam #1 Gr Intervals midpt Freq A+ >= 69 69.95 4 A 67 - 68.9 67.95 1 A- 63 - 66.9 64.95 9 * B+ 60 - 62.9 61.45 7 * B 56 - 59.9 57.95 17 ** B- 53 - 55.9 54.45 19 ** C+ 49 - 52.9 50.95 38 ***** C 46 - 48.9 47.45 24 *** C- 35 - 45.9 40.45 72 ********** D 28 - 34.9 31.45 12 * F <= 27.9 14.45 6 Total 209 Frequency distribution for Score 5 (Max = 50, Weight = 30) Exam #2 Gr Intervals midpt Freq A+ >= 50 50.45 14 ** A 48 - 49.9 48.95 24 *** A- 45 - 47.9 46.45 53 ******* B+ 43 - 44.9 43.95 32 **** B 40 - 42.9 41.45 27 *** B- 38 - 39.9 38.95 9 * C+ 35 - 37.9 36.45 11 * C 33 - 34.9 33.95 6 C- 25 - 32.9 28.95 16 ** D 20 - 24.9 22.45 9 * F <= 19.9 10.45 3 Total 204 Frequency distribution for Score 6 (Max = 80, Weight = 35) Final exam Gr Intervals midpt Freq A+ >= 79 79.95 8 * A 76 - 78.9 77.45 25 *** A- 72 - 75.9 73.95 47 ******* B+ 68 - 71.9 69.95 32 **** B 64 - 67.9 65.95 20 ** B- 60 - 63.9 61.95 25 *** C+ 56 - 59.9 57.95 20 ** C 52 - 55.9 53.95 7 * C- 40 - 51.9 45.95 14 ** D 32 - 39.9 35.95 3 F <= 31.9 16.45 0 Total 201