How does this change the data for Classes A and C?

Question

anonymous · Answer

Mrs. Smith gives three quizzes before each test, she allows each student to drop their lowest test grade during the grading period and replace it with the average of their quiz grades.  The grades in red below were replaced with the average quiz grades. 



Class A

Class B

Class C




80

90

100



85

90

90



87

85

94



92

84

100



86

91

75



90

78

84



94

94

94



100

86

72



75

82

85



70

78

87



85

86

72



38

78

100



72

95

90



94

90

94



82

88

60

Part 1: How does this change the data for Classes A and C?
Part 2: Based upon these changes which of the three classes did the best on the exam? Justify your answer.