Sampling

Question 1

What is sampling?

Answer 1

Selecting participants from target population, allows us to get generalised data

Question 2

What is a target population?

Answer 2

Group of people who sample is drawn from

Question 3

What is a representative sample?

Answer 3

Sample typical of target population

Question 4

What are the 4 types of sampling?
Describe and Evaluate

Answer 4

Random- Select from random amounts (Put names in a hat)
Strength- Quick
Weakness- Subject to luck, may not have representative sample

Stratified- Stratified sample- Deriving subgroups
Strength-May get generalisable, representative sample
Weakness-TIME CONSUMING, SUBGROUPS MAY BE IMPOSSIBLE TO FIND

Opportunity- Select people readily available (Ask people on the street to take part)
* Strength- Quick way of gathering sample
* Weakness- subject to bias and sample may not be representative

Volunteer- Participants self-select to become part of a study
* Strength- Have willing participants, gained informed consent
* Weakness- Biased as a person who is interested in that research area will be more likely to volunteer, less likely to get a representative sample