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User:Jukeboksi/BBA studies/Researching Target Markets: Difference between revisions

(definition of w:standard deviation)
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== Later weeks ==
== Later weeks ==


In [[w:statistics|statistics]] and [[w:probability theory|probability theory]], the '''[[w:standard deviation|standard deviation]]''' ('''SD''') (represented by the Greek letter sigma, '''[[w:Sigma|σ]]''') shows how much variation or [[w:tatistical dispersion|dispersion]] from the average exists.  
*In [[w:statistics|statistics]] and [[w:probability theory|probability theory]], the '''[[w:standard deviation|standard deviation]]''' ('''SD''') (represented by the Greek letter sigma, '''[[w:Sigma|σ]]''') shows how much variation or [[w:tatistical dispersion|dispersion]] from the average exists.  
::A low standard deviation indicates that the data points tend to be very close to the [[w:mean|mean]] (also called expected value); a high standard deviation indicates that the data points are spread out over a large range of values. ( Wikipedia )
:::A low standard deviation indicates that the data points tend to be very close to the [[w:mean|mean]] (also called expected value); a high standard deviation indicates that the data points are spread out over a large range of values. ( Wikipedia )
 
* The '''[[w:coefficient of variation|coefficient of variation]]''' ('''CV''') is a [[w:normalization (statistics)|normalized]] measure of [[w:statistical dispersion|dispersion]] of a [[w:probability distribution|probability distribution]] or [[w:frequency distribution|frequency distribution]]. ( Wikipedia )
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