Calculate the mean deviation about mean for the following frequency distribution :

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 mean. So,
Mean = ![]()
Here, Mean = ![]()
Therefore, Mean = 9.2

Mean Deviation = ![]()
Mean deviation for given data ![]()
Hence, The Mean Deviation is 3.84
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