Statisticsmedium · Past Paper
In the formula for median of grouped data $L + \frac{\frac{N}{2} - cf}{f} \times h$, what does 'cf' represent?
AFrequency of median class
BCumulative frequency of the class preceding the median class
CCumulative frequency of the median class
DTotal frequency
✓ Correct Answer: B — Cumulative frequency of the class preceding the median class
By definition, 'cf' is the cumulative frequency of the class just before the median class.
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