Set X is given by {a, 2a, 3a, 4a, 5a} where ‘a’ is a positive integer. If element ‘a’ in Set X is replaced by ‘b’ and b < a, then which of the following must be true?
I.Mean would not change.
II.Median would not change.
III. Standard deviation would not change
a)
I only
b)
II only
c)
III only
d)
Both I and II
e)
Both II and III
Correct answer is option 'B'. Can you explain this answer?
This discussion on Set X is given by {a, 2a, 3a, 4a, 5a} where a is a positive integer. If element a in Set X is replaced by b and b a, then which of the following must be true?I.Mean would not change.II.Median would not change.III. Standard deviation would not changea)I onlyb)II onlyc)III onlyd)Both I and IIe)Both II and IIICorrect answer is option 'B'. Can you explain this answer? is done on EduRev Study Group by GMAT Students. The Questions and
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Set X is given by {a, 2a, 3a, 4a, 5a} where a is a positive integer. If element a in Set X is replaced by b and b a, then which of the following must be true?I.Mean would not change.II.Median would not change.III. Standard deviation would not changea)I onlyb)II onlyc)III onlyd)Both I and IIe)Both II and IIICorrect answer is option 'B'. Can you explain this answer? over here on EduRev! Apart from being the largest GMAT community, EduRev has the largest solved
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