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what is assume mean method ?

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 Like its, name in this method we assume a number as the mean of the given data.

 

 

 

 

d

Then we subtract this assumed mean from all class marks. Hence find di.Let a is our assumed mean and x1, x2, x3 .......xn are the class marks. Thend1 = x1 - ad2 = x2 - a3 = x3 - a

 

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