Terminology in Grouped Median Formula
$$M=l+\left(\frac{\frac{N}{2}-CF}{f}\right)h$$
where:
$$l$$ = lower boundary of the median class
$$n$$ = total frequency
$$CF$$ = cumulative frequency before the median class
$$f$$ = frequency of the median class
$$h$$ = class width
Usage
- These quantities must be identified correctly before applying the grouped median formula.