Dear Student , Given : x =12 2∑fi=100 ∑fidi= x ×∑fi =12 2×100 =1220 Hence option d is correct Regards

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pls solve ques 7

Dear Student ,

G i v e n : x = 12.2 \sum_{} f_{i} = 100 \sum_{} f_{i} d_{i} = x \times \sum_{} f_{i} = 12.2 \times 100 = 1220 H e n c e o p t i o n (d) i s c o r r e c t .

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Aakash EduTech Pvt. Ltd.

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