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

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Find the standard deviation of set X (1) all the members of [#permalink] New post 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
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 [#permalink] New post 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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 [#permalink] New post 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
  [#permalink] 09 Jul 2004, 05:17
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Find the standard deviation of set X (1) all the members of

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