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Mary has taken 7 quizzes in her social studies course. She received the following grades on the quizzes: 94, 74, 78, 90, 85, 82, 78 Which statement about Mary's grades is t…
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Mary has taken 7 quizzes in her social studies course. She received the following grades on the quizzes: 94, 74, 78, 90, 85, 82, 78 Which statement about Mary's grades is t…
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Apr 9, 2019
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Mary has taken 7 quizzes in her social studies course. She received the following grades on the quizzes: 94, 74, 78, 90, 85, 82, 78 Which statement about Mary's grades is true? A. The mean and median are equal. B. The mean and mode are equal. C. The median is 82 and the mode is 78. D. The mean is 83 and the median is 90.
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Paul Ho
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C) The median is 82 and the mode is 78.
You have to put them all in order first and calculate each one at a time. You should get mean- 83, mode-78, and median-82. All the other choices do not align with the answer.
Thomas Krieger
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Apr 10, 2019
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In order lowest to highest, Mary's grades are
74, 78, 78, 82, 85, 90, 94
The median grade is 82. The mode is 78 (2 grades).
The appropriate choice is ...
C. The median is 82 and the mode is 78.
_____
The mean is 83, so statement A is false.
Michael Hall
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Apr 14, 2019
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