Find the standard deviation of set X (1) all the members of : DS Archive
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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]

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08 Jul 2004, 04:47
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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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08 Jul 2004, 04:52
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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09 Jul 2004, 04:17
(C)
Separately 1 and 2 lead to infite series.
Combining we will get only one solution i.e. 2

SD of this series = 0
09 Jul 2004, 04:17
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