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# Statistics

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Director
Joined: 25 Oct 2008
Posts: 607
Location: Kolkata,India
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Kudos [?]: 424 [0], given: 100

Statistics [#permalink]  28 Sep 2009, 18:31
00:00

Difficulty:

(N/A)

Question Stats:

100% (02:49) correct 0% (00:00) wrong based on 1 sessions
If the average (arithmetic mean) of five consecutive negative integers is 2k – 1, what is the difference between the greatest and least of the five integers?
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Manager
Joined: 25 Mar 2009
Posts: 55
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Kudos [?]: 12 [0], given: 9

Re: Statistics [#permalink]  28 Sep 2009, 22:09
tejal777 wrote:
If the average (arithmetic mean) of five consecutive negative integers is 2k – 1, what is the difference between the greatest and least of the five integers?

Do we need to know the Average is even or odd to find the range of these 5 neg consecutives?

And Even the five are neg or not, the range is always 4.
Manager
Joined: 14 Dec 2008
Posts: 169
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Kudos [?]: 17 [0], given: 39

Re: Statistics [#permalink]  29 Sep 2009, 10:49
numbers will be 2k-3, 2k-2, 2k-1, 2k, 2k+1
range = 2k+1 - 2k+3 = 4
Director
Joined: 25 Oct 2008
Posts: 607
Location: Kolkata,India
Followers: 10

Kudos [?]: 424 [0], given: 100

Re: Statistics [#permalink]  29 Sep 2009, 20:13
Def. sleep deprived when I was doing the question
Sorry got thrown off by the negative integer thing..
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Status: There is always something new !!
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Joined: 08 May 2009
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Kudos [?]: 184 [0], given: 10

Re: Statistics [#permalink]  17 May 2011, 23:00
5 consecutive numbers means difference between first and the last integer = 4
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Re: Statistics   [#permalink] 17 May 2011, 23:00
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