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  3. a student took six exams in a course last semester

A student took six exams in a course last semester The scores are shown below...

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A student took six exams in a course last semester The scores are shown below 71 87 94 74 94 74 Calculate the mean variance and standard deviation Round to 4 decimal places when needed and use rounded answers for future calculations The mean is The variance is The standard deviation is o

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