Calculate mean deviation from the median of the following data :

Given, Numbers of observations are given.
To Find: Calculate the Mean Deviation
Formula Used: Mean Deviation = ![]()
Explanation.
Here we have to calculate the mean deviation from the median. So,
N = 20
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So, the cumulative frequency just greater than 10 is 12, and the corresponding value of x is 15
Median = 15
Now, Mean = ![]()
![]()
Mean = 14.1

Mean deviation from Median ![]()
And, Mean deviation from Median ![]()
Hence, The Mean Deviation from the median is 6.9 and from mean is 6.99.