Population and samples
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9 Terms
What is a population
Whole set of items that are of interest
What is a census
Observes or measures every member of a population
What is a sample
A subset of the population intended to represent the population
What is a sampling unit
Individual unit of a population
What is a sampling frame
Sampling units that is individually named or numbered to form a list called a sampling frame
Advantage of a census
Should give completely accurate results
Disadvantage of a census
Time consuming and expensive
Cannot be used when testing process destroys the item
Hard to process large quantity of data
Advantage of a sample
Less time consuming than census
Fewer people have to respond (quick)
Less data to process
Disadvantage of a sample
Data may not be as accurate
May not be large enough to represent small subgroups of population
Note 
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