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# M20 Q35

Author Message
Senior Manager
Joined: 15 Sep 2011
Posts: 358

Kudos [?]: 403 [0], given: 45

Location: United States
WE: Corporate Finance (Manufacturing)

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08 May 2013, 15:59
Quote:
Note that the median of a set with odd number of elements is just the middle element, when arranged in ascending/descending order.

(1) The median of set is 0. The median of this set of 5 (odd) elements must be the middle term, hence . Sufficient.

(2) The median of set is . It could be that (in this case the set is {-1, 0, 0, 1, 3}) as well as it could be that (in this case the set is {-2, -1, 1, 2, 3}). Not sufficient.

Very clear, Thanks all.

I'm pretty slow with picking numbers for DS problems, especially statistics. In this case, is "2" a go to number for testing, or does this 'recognition' skill come with practice and/or knowledge?

Kudos [?]: 403 [0], given: 45

Math Expert
Joined: 02 Sep 2009
Posts: 41873

Kudos [?]: 128601 [0], given: 12180

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09 May 2013, 02:22
mejia401 wrote:
Quote:
Note that the median of a set with odd number of elements is just the middle element, when arranged in ascending/descending order.

(1) The median of set is 0. The median of this set of 5 (odd) elements must be the middle term, hence . Sufficient.

(2) The median of set is . It could be that (in this case the set is {-1, 0, 0, 1, 3}) as well as it could be that (in this case the set is {-2, -1, 1, 2, 3}). Not sufficient.

Very clear, Thanks all.

I'm pretty slow with picking numbers for DS problems, especially statistics. In this case, is "2" a go to number for testing, or does this 'recognition' skill come with practice and/or knowledge?

In this case I used trial and error approach but generally smart numbers recognition skills come with practice.
_________________

Kudos [?]: 128601 [0], given: 12180

Re: M20 Q35   [#permalink] 09 May 2013, 02:22

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# M20 Q35

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