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Question


The mean deviation from the mean for the set of observations – 1, 0, 4 is


Options:
A .   less than 3
B .   less than 1 
C .   greater than 2.5
D .   greater than 4.9
Answer: Option A
:
A
¯x=1+0+43=1. Mean Deviation = 13[|11|+|01|+|41|]=2

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