Population Samples: the Mean
In terms of the human population, we are unable to observe and chart the characteristics population as a whole. When dealing with a population sample the mean is expressed as follows:
As you can see, the equations are nearly identical; in the case of sample
populations, the Roman numeral Mu
is replaced
with x-bar .
Case Example:
Mean Height of UCLA Students
Nomenclature is also altered when discussing the sample Variance.
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