MandysNotes

Friday, 22 January 2010 21:50

Population

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OK, so "population" doesn't exactly merit a "wordy definition" on its own.  But when we think of "population" we often think of the U.S. population - such as is recorded by the U.S. Census. 

 

 

This is not too far off-the-mark.  According to Wikipedia:  "A population can be defined as including all people or items with the characteristic one wishes to understand."

 

 

More simply put, a statistical POPULATION is the POOL from which a SAMPLE can be drawn. 

 

POPULATIONS can often be large, making studies overly complex, time-consuming and expensive.  This is why we draw a SAMPLE and go to great lengths to find a SAMPLE that is REPRESENTATIVE of the POPULATION.  This yields more time-efficient studies conducted on a SAMPLE instead of the entire POPULATION. 

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