Q10 of 35 Page 360

Find the mean deviation about the mean for the data in Exercises.

We make the following table and add other columns after calculations.




So, we can calculate the absolute values of the deviations from the mean, i.e., |xi – x̅|, as shown in the table.


Therefore, we have


And


Hence, the mean deviation about the mean for the given data is 11.28.


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Find the mean deviation about the median for the data in Exercises.

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Find the mean deviation about the mean for the data in Exercises.

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Find the mean deviation about median for the following data:

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Calculate the mean deviation about median age for the age distribution of 100 persons given below:


[Hint Convert the given data into continuous frequency distribution by subtracting 0.5 from the lower limit and adding 0.5 to the upper limit of each class interval]