Population & Sampling Flashcards
To be able to identify the difference between a census and sample of a population, and discuss the advantages of each method.
1
Q
Census
A
Data collected from the whole population.
1
Q
Population
A
All the people (or items) in a group you are
interested in.
2
Q
Sample
A
Data collected from part of the population.
3
Q
What are the advantages of using a census?
A
- Unbiased.
- Accurate because
it uses the whole
population.
4
Q
What are the disadvantages of using a census?
A
- Takes a long time
- Expensive
- Difficult to make sure
everybody is used if
lots of people/items in
population.
5
Q
What are the advantages of using a sample
A
- Less expensive.
- Quicker.
- Easier because it
considers less data
than a census.
6
Q
What are the disadvantages of using a sample?
A
- Possibly biased.
- Not completely
representative. - Sample size may
be too small.
7
Q
Sampling Frame
A
A list of the population
8
Q
Sampling Unit
A
A person or item included in the sample.