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Question

Write the formula to find median from grouped frequency distribution


Solution

estimated median formula for grouped frequency distribution is 

$$L+(\dfrac { \dfrac n2-B }{ G } \times W)$$

where 

L is lower class boundary of the group containing the median

n is the total number of values

B is the cumulative frequency of the groups before the median group

G is the frequency of the median group

W is the group width

Mathematics

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