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The following table presents the scores of students in Statistics examination Scores Frequency 30 - 39 2 40 - 49 6 50 - 59 60

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The following table presents the scores of students in Statistics examination Scores Frequency 30 - 39 2 40 - 49 6 50 - 59 60 60 - 69 140 70 - 79 184 80 - 89 135 90 - 99 78 What is the standard deviation of the scores? Select the correct response: 14.22 O 12.24 O 12.29 O 14.29

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