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A lab of 25 students has the following grades: 63, 63, 90, 73, 78, 85, 95, 82, 67, 74, 71, 87, 71, 60, 59, 95,

A lab of 25 students has the following grades:

63, 63, 90, 73, 78, 85, 95, 82, 67, 74, 71, 87, 71, 60, 59, 95, 55, 76, 71, 68, 77, 67, 77, 83, 79

Use R to calculate the mean grade. Please report your answer using all decimal places.

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