BUSINESS ADMINISTRATION
RESEARCH METHODOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Zero
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minimum
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maximum
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1
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Detailed explanation-1: -The sum of the deviations from the mean is zero. This will always be the case as it is a property of the sample mean, i.e., the sum of the deviations below the mean will always equal the sum of the deviations above the mean.
Detailed explanation-2: -When the mean deviation is zero, it does not give an information about the measurement of the variability of data. When the average of all the deviations in the data set is equal to zero, then we can say that, the mean deviation is equal to zero. Hence, the mean derivation can be zero.
Detailed explanation-3: -The sum of the deviations of a given set of observations from their arithmetic mean is always zero. It is due to the property that the arithmetic mean is characterised as the centre of gravity. i.e. sum of positive deviation from the mean is equal to the sum of negative deviations.