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04 May 2017, 01:49
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If x > y > z, which cannot be the average (arithmetic mean) of x, y and z?
A. x
B. y
C. x – 1
D. z + 1
E. (z + x)/2
A. x
B. y
C. x – 1
D. z + 1
E. (z + x)/2
04 May 2017, 06:33
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Bunuel
If x > y > z, which cannot be the average (arithmetic mean) of x, y and z?
A. x
B. y
C. x – 1
D. z + 1
E. (z + y)/2
A. x
B. y
C. x – 1
D. z + 1
E. (z + y)/2
Nice!
The average (mean) is meant to provide a rough idea of what the numbers look like.
So, since x is the greatest value, it cannot be the average.
Answer:
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stonecold
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04 May 2017, 10:04
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Here is what i did on this question -->
Using the definition of arithmetic mean -> Mean is a number that can be used to replace each element of the data set.
If mean is X --> Number can be written as X,X,X
But the other two numbers are less than X.
Hence Mean can never be X.
Smash that A.
Using the definition of arithmetic mean -> Mean is a number that can be used to replace each element of the data set.
If mean is X --> Number can be written as X,X,X
But the other two numbers are less than X.
Hence Mean can never be X.
Smash that A.
