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View Full Version : Really stupidly simple standard deviation q.

PartyGirlUK
03-11-2006, 08:34 AM
If the standard deviation of 1 trial is 300, what is the standard deviation of the sum of 100 trials? What is the standard deviation of the mean of 100 trials?
ArtVandelay
03-11-2006, 08:49 AM
3000 and 30 respectively
PartyGirlUK
03-11-2006, 09:10 AM
and the standard deviation of the sum of 9 trials would be 100 right?
ArtVandelay
03-13-2006, 05:51 AM
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and the standard deviation of the mean of 9 trials would be 100

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