the mean of 20 terms is 35 . If each number is increased by 10% , what will be the new mean.
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Step-by-step explanation:
Given Mean of 10 observations is 20
⟹Sum of 10 observations is S=20×10=200
If each observation is added by 5 Then sum of observations is added by 5×10=50
⟹S =200+50=250
Mean of new observation is 10S ′ =
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