3.2d - Sampling Flashcards
1
Q
What can be done when it is impractical to measure every individual?
A
select a representative sample of the population
2
Q
What determines the appropriate sample size?
A
the extent of the natural variation within a population
3
Q
More variable populations require…
A
a larger sample size
4
Q
A representative sample should…
A
share the same mean and the same degree of variation about the mean as the population as a whole
5
Q
In random sampling…
A
members of the population have an equal chance of being selected
6
Q
In systemic sampling…
A
members of a population are selected at regulated intervals
7
Q
In stratified sampling…
A
the population is divided into categories that are then sampled proportionally
