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For a certain set of n numbers,where n>1,is the average(arithmetic mean)equal to the median?
1)If the n numbers in the set are listed in increasing order,then the difference between any pair of successive numbers in the set is 2.
2)The range of the n numbers in the set is 2(n-1)
why the answer is only (1)?
in an arithmetic progression,only n is an odd,then the arithmetic mean would be the median,if an even,won't be....
looking forward persuasive answer,thanks |
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发表于 2011-12-26 14:13:27
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