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LOWER CLASS LIMIT 56 61 66 71 76 81 86 91 96 UPPER CLASS LIMIT 60 65 70 75 80 85 90 95 100 FREQUENCY

LOWER CLASS LIMIT 56 61 66 71 76 81 86 91 96 UPPER CLASS LIMIT 60 65 70 75 80 85 90 95 100 FREQUENCY 3 4 8 7 6 5 3 2 2 Find the variance and standard deviation

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