Q.

Find mean deviation about the mean for the following data:

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answer is 2.3.

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Detailed Solution

N=∑i=16 fi=40,∑i=16 fixi=300, Therefore x¯=1N∑i=16 fixi=140×300=7.5∑i=16 fixi−x¯=92 And M.D. (x¯)=1N∑i=16 fixi−x¯=140×92=2.3

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Find mean deviation about the mean for the following data: