Statistics Grade Data (17 variables, 79 observations)
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Statistics Grade Data (17 variables, 79 observations)
Averages by Grade Category
Student Project1 Project2 Project3 Project4 Homework1 Homework2 PopQuiz1 PopQuiz2 PopQuiz3 PopQuiz4 Quiz1 Quiz2 Exam1 Exam2 Semester Grade ProjectAvg HomeworkAvg PopQuizAvg QuizAvg ExamAvg Semester Grade
1 80 87 72 81 88 88 77.5 80 65 77.5 80 79 74 79 79 80.000 88.000 75.000 79.500 76.500 79
2 78 85 88 74 71 83 70 50 90 75 70 87 80 86 81 81.250 77.000 71.250 78.500 83.000 81
3 78 85 90 74 88 86 55 85 50 75 74 74 85 81 81 81.750 87.000 66.250 74.000 83.000 81
4 80 87 72 81 86 87 80 90 92.5 87.5 74 85 89 91 86 80.000 86.500 87.500 79.500 90.000 86
5 77 84 79 82 84 79 60 77.5 72.5 75 79 59 72 74 76 80.500 81.500 71.250 69.000 73.000 76
6 77 84 75 78 83 88 67.5 50 70 85 74 78 80 82 80 78.500 85.500 68.125 76.000 81.000 80
7 80 87 72 81 80 87 65 80 75 82.5 79 88 71 82 80 80.000 83.500 75.625 83.500 76.500 80
8 88 86 82 84 88 89 72.5 70 72.5 77.5 80 88 83 90 87 85.000 88.500 73.125 84.000 86.500 87
9 83 77 72.5 84 85 90 60 65 60 62.5 77 68 80 65 76 79.125 87.500 61.875 72.500 72.500 76
10 77 84 81 82 81 87 60 62.5 72.5 77.5 75 77 76 84 80 81.000 84.000 68.125 76.000 80.000 80
11 77 82 76 82 86 90 57.5 65 75 70 77 85 83 82 82 79.250 88.000 66.875 81.000 82.500 82
12 80 83 77 85 50 75 65 50 60 70 67 51 66 62 66 81.250 62.500 61.250 59.000 64.000 66
13 78 85 88 74 83 87 65 70 70 77.5 65 57 86 76 80 81.250 85.000 70.625 61.000 81.000 80
14 76 85 88 82 84 88 70 77.5 72.5 80 84 82 75 85 83 82.750 86.000 75.000 83.000 80.000 83
15 83 73 64.5 50 76 65 52.5 60 57.5 50 60 55 71 55 60 67.625 70.500 55.000 57.500 63.000 60
16 87 88 83 90 85 87 60 62.5 85 60 67 70 77 80 82 87.000 86.000 66.875 68.500 78.500 82
17 76 85 86 82 50 50 50 50 50 72.5 85 57 75 80 73 82.250 50.000 55.625 71.000 77.500 73
18 77 82 76 82 50 50 65 50 67.5 50 69 75 78 83 75 79.250 50.000 58.125 72.000 80.500 75
19 87 88 84 78 67 86 50 65 70 77.5 70 90 88 77 82 84.250 76.500 65.625 80.000 82.500 82
20 88 86 83 90 78 84 57.5 57.5 62.5 60 69 60 67 64 73 86.750 81.000 59.375 64.500 65.500 73
21 87 88 84 78 87 85 70 72.5 75 60 90 80 87 76 82 84.250 86.000 69.375 85.000 81.500 82
22 88 88 83 90 87 88 60 50 67.5 62.5 77 57 75 68 76 87.250 87.500 60.000 67.000 71.500 76
23 88 88 83 90 86 88 62.5 70 65 77.5 75 66 77 73 79 87.250 87.000 68.750 70.500 75.000 79
24 78 85 85 50 50 50 62.5 75 72.5 50 87 61 85 63 70 74.500 50.000 65.000 74.000 74.000 70
25 87 88 84 78 79 88 65 75 75 62.5 83 84 86 85 84 84.250 83.500 69.375 83.500 85.500 84
26 77 82 76 82 87 85 75 50 57.5 80 67 73 70 75 76 79.250 86.000 65.625 70.000 72.500 76
27 80 83 77 88 88 87 55 80 75 65 73 68 71 71 77 82.000 87.500 68.750 70.500 71.000 77
28 77 82 76 82 84 88 60 85 85 87.5 79 87 78 84 82 79.250 86.000 79.375 83.000 81.000 82
29 80 83 77 88 82 88 75 75 75 75 80 77 75 78 81 82.000 85.000 75.000 78.500 76.500 81
30 88 86 82 84 82 68 60 60 85 67.5 77 79 72 74 77 85.000 75.000 68.125 78.000 73.000 77
31 80 83 73 88 76 81 50 70 50 65 73 72 63 71 72 81.000 78.500 58.750 72.500 67.000 72
32 88 86 82 84 87 88 65 72.5 65 80 73 59 77 66 77 85.000 87.500 70.625 66.000 71.500 77
33 88 88 87 90 88 88 80 87.5 85 75 85 87 90 88 90 88.250 88.000 81.875 86.000 89.000 90
34 77 84 79 82 50 50 67.5 67.5 90 77.5 85 76 88 83 80 80.500 50.000 75.625 80.500 85.500 80
35 83 77 72.5 84 88 88 62.5 65 62.5 67.5 74 63 82 73 77 79.125 88.000 64.375 68.500 77.500 77
36 83 77 72.5 84 85 90 60 62.5 65 72.5 74 61 72 79 77 79.125 87.500 65.000 67.500 75.500 77
37 88 88 84 84 86 89 72.5 50 85 67.5 79 53 85 86 84 86.000 87.500 68.750 66.000 85.500 84
38 87 88 86 78 86 86 57.5 50 60 77.5 79 78 78 75 80 84.750 86.000 61.250 78.500 76.500 80
39 76 85 86 82 87 50 72.5 67.5 70 75 79 80 80 74 78 82.250 68.500 71.250 79.500 77.000 78
40 74 85 83 74 83 82 65 75 70 58 80 78 84 75 78 79.000 82.500 67.000 79.000 79.500 78
41 71 85 86 80 88 81 65 60 60 83 78 76 79 81 80 80.500 84.500 67.000 77.000 80.000 80
42 73 89 80 86 85 86 85 78 73 88 78 81 75 82 81 82.000 85.500 81.000 79.500 78.500 81
43 81 82 80 79 75 74 60 75 78 65 67 68 80 79 77 80.500 74.500 69.500 67.500 79.500 77
44 79 85 86 80 75 89 50 55 53 60 81 81 70 62 73 82.500 82.000 54.500 81.000 66.000 73
45 71 85 86 80 84 80 50 60 63 50 67 66 68 78 74 80.500 82.000 55.750 66.500 73.000 74
46 77 80 88 80 83 90 55 78 70 69.5 80 74 81 84 82 81.250 86.500 68.125 77.000 82.500 82
47 74 85 83 74 85 79 70 60 55 65 70 72 73 70 74 79.000 82.000 62.500 71.000 71.500 74
48 86 86 90 86 76 75 60 65 53 65 64 80 80 77 79 87.000 75.500 60.750 72.000 78.500 79
49 74 85 83 74 88 75 70 80 78 65 60 84 77 83 78 79.000 81.500 73.250 72.000 80.000 78
50 82 65 80 80 87 86 50 75 50 65 65 80 80 73 76 76.750 86.500 60.000 72.500 76.500 76
51 85 88 91 88 90 86 60 75 63 80 75 88 74 78 81 88.000 88.000 69.500 81.500 76.000 81
52 75 71 80 79 78 87 80 70 68 50 71 83 80 65 75 76.250 82.500 67.000 77.000 72.500 75
53 83 76 89 79 88 87 80 58 50 50 74 81 77 81 79 81.750 87.500 59.500 77.500 79.000 79
54 84 88 90 87 85 89 60 73 70 50 72 70 77 86 83 87.250 87.000 63.250 71.000 81.500 83
55 69 73 80 80 88 75 75 70 78 88 86 67 83 88 80 75.500 81.500 77.750 76.500 85.500 80
56 86 83 85 80 86 86 80 83 80 88 90 80 86 90 86 83.500 86.000 82.750 85.000 88.000 86
57 83 76 89 79 87 82 90 50 88 90 90 81 90 89 85 81.750 84.500 79.500 85.500 89.500 85
58 80 85 83 85 88 88 65 75 55 68 72 85 80 77 81 83.250 88.000 65.750 78.500 78.500 81
59 82 88 83 85 88 90 70 88 85 90 84 85 86 86 87 84.500 89.000 83.250 84.500 86.000 87
60 81 82 80 79 82 68 70 78 55 63 71 63 66 71 72 80.500 75.000 66.500 67.000 68.500 72
61 85 88 91 88 89 83 80 50 68 75 75 80 88.5 78 85 88.000 86.000 68.250 77.500 83.250 85
62 81 82 60 50 50 50 50 50 50 50 67 58 63 61 50 68.250 50.000 50.000 62.500 62.000 50
63 86 83 85 80 84 86 50 78 68 50 78 71 73 77 78 83.500 85.000 61.500 74.500 75.000 78
64 75 71 80 79 83 85 65 70 75 80 67 67 74 83 77 76.250 84.000 72.500 67.000 78.500 77
65 80 85 83 85 80 85 85 50 68 68 74 81 74 83 81 83.250 82.500 67.750 77.500 78.500 81
66 77 80 88 80 82.5 75 75 73 60 75 77 88 87 90 83 81.250 78.750 70.750 82.500 88.500 83
67 86 86 90 86 88 85 70 78 78 83 73 78 79 83 83 87.000 86.500 77.250 75.500 81.000 83
68 85 88 91 88 85 89 85 88 90 90 77 90 85 83 88 88.000 87.000 88.250 83.500 84.000 88
69 73 89 80 86 88 50 90 75 78 83 73 80 80 82 80 82.000 69.000 81.500 76.500 81.000 80
70 86 86 90 86 82.5 86 65 70 58 75 66 71 73 70 77 87.000 84.250 67.000 68.500 71.500 77
71 75 71 80 79 86 78 55 63 53 60 65 53 75 72 72 76.250 82.000 57.750 59.000 73.500 72
72 81 66 70 50 74 75 90 75 53 58 74 80 74 80 71 66.750 74.500 69.000 77.000 77.000 71
73 77 80 88 80 76 73 55 78 50 55 73 74 73 71 74 81.250 74.500 59.500 73.500 72.000 74
74 84 88 90 87 88 87.5 90 68 65 83 81 82 89 87 87 87.250 87.750 76.500 81.500 88.000 87
75 69 73 80 80 86 84 55 58 68 83 71 67 71 77 74 75.500 85.000 66.000 69.000 74.000 74
76 83 76 70 79 85 81 75 50 50 55 68 74 72 70 72 77.000 83.000 57.500 71.000 71.000 72
77 84 88 90 87 84 88 80 50 75 88 73 50 76 71 77 87.250 86.000 73.250 61.500 73.500 77
78 73 89 80 86 86 87 85 55 73 85 63 75 77 81 80 82.000 86.500 74.500 69.000 79.000 80
79 86 83 85 80 78 50 50 50 78 50 80 50 77 67 73 83.500 64.000 57.000 65.000 72.000 73
Variable Definitions for Grade Database (17 variables, 79 observations)
Variable Definition
SemAverage Grade for entire course
Class 1=fall semester, 2=winter semester (same instructor and time of day)
Project1 Grade on first written and oral project report involving data analysis by teams of 3-4 students
Project2 Grade on second written and oral project report involving data analysis by teams of 3-4 students
Homewrk1 Grade on first set of independent learning exercises.
PopQuiz1 Grade on first unannounced 20-minute essay/problem quiz over topics in the last 1-2 weeks
PopQuiz2 Grade on second unannounced 20-minute essay/problem quiz over topics in the last 1-2 weeks
Quiz1 Grade on first announced 30-minute mult-choice/problem/essay quiz that covers 4-5 weeks' material
Exam1 Grade on first 100-minute mult-choice/problem/essay mid-term exam covering 6 weeks' material
Project3 Grade on third written and oral project report involving data analysis by teams of 3-4 students
Project4 Grade on fourth written and oral project report involving data analysis by teams of 3-4 students
Homewrk2 Grade on second set of independent learning exercises.
PopQuiz3 Grade on third unannounced 20-minute essay/problem quiz over topics in the last 1-2 weeks
PopQuiz4 Grade on fourth unannounced 20-minute essay/problem quiz over topics in the last 1-2 weeks
Quiz2 Grade on second announced 30-minute mult-choice/problem/essay quiz that covers 4-5 weeks' material
Exam2 Grade on second 100-minute mult-choice/problem/essay mid-term exam covering 6 weeks' material
ExamAvg Average grade on two 100-minute mult-choice/problem/essay mid-term exams covering 6 weeks' material
Note Two sections of introductory statistics were taught by the same
instructor. Grading is on a scale from 0.0 to 4.0 in increments of 0.1. A
project is a written report and oral presentation involving data analysis by
teams of 3-4 students. Each team member of the team gets the same grade
except for unusual slackness or leadership (team members rate one
anothers' contributions). A homework is an individual set of independent
learning exercises. A popquiz is an unannounced closed-book 20-minute
problem/essay test over topics covered in the last 1-2 weeks. A quiz is an
announced 30-minute multiple-choice/problem/essay test that covers 4-5
weeks' material. An exam is an announced multiple-choice/problem/essay
test covering everything in the previous 6 weeks. SemAverage is the
percent grade received in the class, which may include adjustments by the
insructor for trend, outliers, or effort.
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