Find the mean (arithmetic) of following frequency distribution
$x$ 0.1 0.2 0.3 0.4 0.5 0.6
$f$ 30 60 20 40 10 50

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Solution

Table for A.M.
Thus, arithmetic mean $(¯ x) = \frac{\sum f_{i} x_{i}}{\sum f_{i}} = \frac{72}{210} = 0.34$
Thus, required A.M. = 0.34

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Find the mean (arithmetic) of following frequency distributionx0.10.20.30.40.50.6f306020401050

Table for A.M.Thus, arithmetic mean (¯x)=∑fixi∑fi=72210=0.34Thus, required A.M. = 0.34

Find the mean (arithmetic) of following frequency distribution
$x$ 0.1 0.2 0.3 0.4 0.5 0.6
$f$ 30 60 20 40 10 50

Table for A.M.
Thus, arithmetic mean $(¯ x) = \frac{\sum f_{i} x_{i}}{\sum f_{i}} = \frac{72}{210} = 0.34$
Thus, required A.M. = 0.34