— is used whenever the relative importance of the items in a series differs
(a)Simple arithmetic mean
(b) Weighted arithmetic mean
(c)Geometric mean
(d)None
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— is used whenever the relative importance of the items in a series differs
(a)Simple arithmetic mean
(b) Weighted arithmetic mean
(c)Geometric mean
(d)None
— is used whenever the relative importance of the items in a series differs
(a)Simple arithmetic mean
(b) Weighted arithmetic mean
(c)Geometric mean
(d)None
Weighted arithmetic mean is used whenever the relative importance of the items in a series differs .