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# Find the standard deviation of set X (1) all the members of

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SVP
Joined: 03 Feb 2003
Posts: 1603

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Find the standard deviation of set X (1) all the members of [#permalink]

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08 Jul 2004, 05:47
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Find the standard deviation of set X

(1) all the members of X are primes
(2) all the members of X are even

Kudos [?]: 303 [0], given: 0

Senior Manager
Joined: 25 Dec 2003
Posts: 358

Kudos [?]: 37 [0], given: 0

Location: India

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08 Jul 2004, 05:52
Statement A and B alone cannot give a solution. Combining both will give only one solution. That is 2 is the only even prime number, and the deviation is 0.
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Director
Joined: 05 Jul 2004
Posts: 893

Kudos [?]: 65 [0], given: 0

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09 Jul 2004, 05:17
(C)
Separately 1 and 2 lead to infite series.
Combining we will get only one solution i.e. 2

SD of this series = 0

Kudos [?]: 65 [0], given: 0

09 Jul 2004, 05:17
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