What do you mean by assumed mean method

1.	What do you mean by assumed mean method
Answer» Assumed Mean Method FormulaLet x1, x2, x3,…,xn\xa0are mid-points or class marks of n class intervals and f1, f2, f3, …, fn\xa0are the respective frequencies. The formula of the assumed mean method is:Here,a = assumed meanfi\xa0= frequency of ith classdi\xa0= xi\xa0– a = deviation of ith classΣfi\xa0= n = Total number of observationsxi\xa0= class mark = (upper class limit + lower class limit)/2

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