Question

The formula to calculate mean using step deviation method is​

Answer 1

Answer:

Assumed Mean = A + ∑di fi / ∑fi , where A is the assumed mean, fi is the frequency, and deviation di = xi - A. Since this method is the extension of the assumed mean method, the formula is: Step Deviation of Mean = A + h [∑ui fi / ∑fi ], ... A is the assumed mean.