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solve the problem Q2: Find mean from the following data set. Classes f 50-70 15 70-90 K 90-110 25 110-130 20 130-150 15 Q3: using

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Q2: Find mean from the following data set. Classes f 50-70 15 70-90 K 90-110 25 110-130 20 130-150 15 Q3: using following data set, construct histogram and frequency polygon. Classes 51-70 71-90 91-110 111-130 131-150 f 15 20 25 K 15

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