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Mathematics, 28.09.2019 15:20 akerner

Kirsten calculated the mean of 10 quiz scores. later she was told there was an error in grading one of her quizzes. a quiz score of 79 was revised to 89.

how will this grading revision affect the calculated mean of kirsten's quiz scores?
answer options with 4 options
a. the mean will stay the same.
b. the mean will be 1 point higher.
c. the mean will be 5 points higher.
d. the mean will be 10 points higher.

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