Math, asked by kunal6827, 1 year ago

plzzzz give me answer of 7and8 question

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Answered by PrajwalMapari

2

mean=sum of all observations/total number of observations

35=sum of observations/75

35×75=sum of observations

2625=sum of observations

if this is multiplied by 4

2625×4=10500

therefore,10500/75

therefore new mean will be 140

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