If you take the above example N 4. D X Mean. Deduction of range and mean deviation from this data will help us to conclude his form and performance.
Let N be the total frequency.
Apply the values in the Median formula. Median n12 th observation if n is odd. Summary For grouped data we cannot find the exact Mean Median and Mode we can only give estimates. Median l n 2 c f f h lleft fracfracn2-cff right times h l f 2 n c f h.
