Research Methods (AVI) Flashcards
Why do Sociologists use sampling?
To ensure the people we have chosen to include in the study are representative of the research population.
Representativeness
An accurate cross-section of the whole population being studied.
Give an example of Representativeness
School population. If there is 67% White British students in the school, for a sample to be representative, 67% of the participants need to be White British.
Population
is the number of people in a city or town, region, country or world
Sampling frame
A list of everyone in the target population from which a sample is drawn. Examples of this would be the electoral roll or a telephone directory.
Census Research
The census is an official survey, conducted every 10 years, which is supposed to cover every household in the UK
Stratified sampling
TRIGGER WORD
Sample that consists of
Involves identifying the subgroups in the target population. Then choosing a sample that consists of participants from each category in the same proportions as they are in the population.
What are the types of Non-random/Non-probability sampling?
- Quota
- Snowball
- Purposive
- Volunteer
- Opportunity
Quota Sampling
The researcher will approach people in the street/shopping centres who have the characteristics that they are looking for, for example, housewives or the elderly. This sampling technique is most often used by market researchers
Snowball Sampling
TRIGGER WORD
makes contact with a member
The researcher makes contact with a member of the target population and then asks them to name one or more possible contacts.
- Used when it is difficult to gain access to a particular group or there is no sampling frame
What are the 5 types of Non-random/Non-probability sampling?
- Quota
- Snowball
- Purposive
- Volunteer
- Opportunity
Volunteer sampling
People volunteer to be involved with the study after seeing an advert in newspapers or on posters.
Snowball Sampling
The researcher makes contact with a member of the target population and then asks them to name one or more possible contacts.
When is snowball sampling used?
Used when it is difficult to gain access to a particular group or there is no sampling frame
What the 3 types of Probability/Random sampling?
- Random
- Systematic
- Stratified
What are the advantages of Random sampling?
- No researcher influence
- No bias in selection
- Considered to be high in representativeness and generalizability due to its scientific nature
What are the advantages of Systematic sampling
2
- No researcher bias
- Considered to be high in representativeness and generalizability due to its scientific nature
What are the advantages of Stratified Sampling?
- No researcher influence
- No bias in selection
- Considered to be high in representativeness and generalizability due to its scientific nature
- Increases the chances of attaining a representative sample
What are the disadvantages of Random sampling?
- Doesn’t guarantee a representative sample
- This is why many sociologists break their lists down into separate categories
What are the disadvantages of Systematic sampling
2
- Isn’t truly random but is close enough.
- This is why many sociologists break their list down into separate categories
What are the advantages of Stratified Sampling?
- No researcher influence
- No bias in selection
- Considered to be high in representativeness and generalizability due to its scientific nature
- Increases the chances of attaining a representative sample
What are the advantages of Quota sampling?
1
- Should be an accurate reflection of the population as a whole.
What are the advantages of Snowball sampling?
3
- Don’t need to know the social characteristics of the research population
- Good when you can’t create a sample frame
- Can gain in-depth valid data
What are the advantages of Purposive sampling
3
- Don’t need to know the social characteristics of the research population
- Good when you can’t create a sample frame
- Can gain in-depth valid data
What are the advantages of Volunteer sampling
3
- Don’t need to know the social characteristics of the research population
- Good when you can’t create a sample frame
- Can gain in-depth valid data
What are the advantages of Opportunity sampling?
4
- Don’t need to know the social characteristics of the research population
- Good when you can’t create a sample frame
- Can gain in-depth valid data
- Easy access