Anthony Thompson <thompson@...>
Tim O'Connor wrote:
Sorry Prof, but the standard deviation is an OBSERVED FACT and notSorry, Tim, the standard deviation is what you get with a PARTICULAR sample from a larger population. If you sample a larger group from that population, then you get the result I stated: because you have more data, your knowledge of the dispersion is BETTER and the std. deviation goes DOWN. Of course it is an OBSERVATION for your sample; and if you sample more extensively from the same population, you get a SMALLER OBSERVED deviation. I won't bore the rest of the list with details, but Tim, you should look it up.
It is as I stated, the Variance (the term I prefer) of the prototype isVariance is fine, but its relation to the std. deviation is fixed. My answer is the same if you choose the variance.
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