Question

Write the formula to find median from grouped frequency distribution

Answer 1

estimated median formula for grouped frequency distribution is

$L+(\frac{\frac{n}{2}-B}{G}\times W)$

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