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experiment

by Chrystelle » Fri Jan 12, 2007 7:01 am
During an experiment, some water was removed from each of 6 water tanks. If the standard deviation of the volumes of water in the tanks at the beginning of the experiment was 10 gallons, what was the standard deviation of the volumes of water in the tanks at the end of the experiment?
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Re: experiment

by aim-wsc » Sun Jan 14, 2007 1:31 am
Chrystelle wrote:During an experiment, some water was removed from each of 6 water tanks. If the standard deviation of the volumes of water in the tanks at the beginning of the experiment was 10 gallons, what was the standard deviation of the volumes of water in the tanks at the end of the experiment?
If same amount of water was taken out from each tank then SD wont change.
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