QABD - Calculation of Arithmetic Mean

Satish V.

28/06/2018 0 0

For Discrete Data

Direct Method:

xÌ? = Σfx/N

Deviation Method:

xÌ? = A + Σu/N

Where A = Assumed Mean & u = X - A

Step Deviation Method:

xÌ? = A + Σfu/N

Where A = Assumed value & u = X - A

For Continous Data

Direct Method:

xÌ? = Σfx/N

Deviation Method:

xÌ? = A + Σu/N

Where A = Assumed Mean & u = X - A

Step Deviation Method:

xÌ? = A + Σfu'/n

Where A = Assumed value & u' = (X - A)/C

C = Class Interval

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