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OpenStudy (anonymous):
Student 1 2 3 4 5 6 7 8 9 Quiz Score 76 82 73 93 91 81 79 86 84 The above table represents the tests scores of 9 students who attended one hour of tutoring the night before a re-take on a quiz. Previously, these students all scored between a 45 and a 63 on the original quiz. Find the Standard Deviation of the data set. Show ALL work for credit.
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