Question: help me Q2: For the following data find a-the mean b- the variance and standard deviation Class Frequency 0-04 4 10 12 20 05-09 10-14

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Q2: For the following data find a-the mean b- the variance and standard deviation Class Frequency 0-04 4 10 12 20 05-09 10-14 15-19 20-24 25-29 0-04 8 6 4

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