1.1) Population & Samples Flashcards
1
Q
What is a Population?
A
The whole set of items of interest
2
Q
What is a Sample?
A
Some subset of the population intended to represent the (whole) population
3
Q
What is a Sampling Unit?
A
Each individual thing within a population which can be sampled
4
Q
What is a Sampling Frame?
A
A list of individually named/numbered Sampling Units
5
Q
What is a Census
A
Data collected from the entire Population
6
Q
Advantage of a Census?
A
Should give completely accurate result
7
Q
Disadvantages of a Census?
A
-Time consuming and expensive
-Cannot be used when testing is destructive
-Large volume of data to process
8
Q
Advantages of a Sample?
A
-Cheaper
-Quicker
-Less data to process
9
Q
Disadvantages of a Sample?
A
-Data may not be completely accurate
-Data may not be large enough to represent small sub-groups
