[Solved] Find the standard deviation for'the group

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Find the standard deviation for'the grouped data. Interval Frequency 50-59 S 60-69 6 70 - 79 S 80-89 90-99 12 6 O 14.4 O 15.2

Find the standard deviation for'the grouped data. Interval Frequency 50-59 S 60-69 6 70 - 79 S 80-89 90-99 12 6 O 14.4 O 15.2 O 16 O 13.7

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