JAMB - Economics (2011 - No. 3)
A major disadvantage of the arithmetic means is that it is
not useful for large data
not suitable for further statistical analysis
cumbersome to determine the actual value
affected by extreme data
Explanation
One of the disadvantage of the arithmetic mean is that it is not the best measure to use with data sets containing a few extreme values or with more dispersed (volatile) data sets in general.
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