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# A scientist recorded the number of eggs in each of the 10

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Director
Joined: 14 Sep 2005
Posts: 993
Location: South Korea
Followers: 2

Kudos [?]: 49 [0], given: 0

A scientist recorded the number of eggs in each of the 10 [#permalink]  19 Dec 2005, 19:06
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A scientist recorded the number of eggs in each of the 10 birds' nests, what was the standard deviation of the numbers of eggs in the 10 nests?

1) The average (arithmetic mean) number of eggs for the 10 nests was 4
2) Each of the 10 nests contained the same number
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Auge um Auge, Zahn um Zahn !

VP
Joined: 06 Jun 2004
Posts: 1059
Location: CA
Followers: 2

Kudos [?]: 54 [0], given: 0

I will take (2) for this one. Std. Dev = 0
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Don't be afraid to take a flying leap of faith.. If you risk nothing, than you gain nothing...

Senior Manager
Joined: 05 Oct 2005
Posts: 485
Followers: 1

Kudos [?]: 2 [0], given: 0

I agree w/ TcHCM, B.

1) No way to find the variance, INSUFF

2) If all the values are the same, st dev. is 0... SUFF
Senior Manager
Joined: 11 Nov 2005
Posts: 328
Location: London
Followers: 1

Kudos [?]: 8 [0], given: 0

1. insufficient
2. sufficient, STDV =0
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