Paper 2: Section A - 2. What are the main stages of the research process? Flashcards
What is random sampling?
REQUIRES A SAMPLING FRAME
Definition: When all members of a target population have an equal chance of being selected.
How it’s carried out: For small samples, names are drawn out from a hat. For large samples, computer programs can be used to generate random lists.
Evaluate random sampling.
Representative? - Not necessarily, the law of probability suggests that random sampling can still produce an unrepresentative sample.
Bias? - NO BIAS.
Needs a sample frame? - YES
Is it hard to access samples? - NO, as those selected are a fixed number.
Favoured by:
What is volunteer sampling?
NO SAMPLING FRAME REQUIRED
Definition: Individuals select themselves as they volunteer to take part in research.
How it’s carried out: Depending on the scenarios. Adult participants respond to promotion about the sample in newspaper/leaflet/online ads, whilst students are prompted to look at posters or QR codes, or teachers responding to messages in a staffroom.
Evaluate volunteer sampling.
Requires a sampling frame? - NO.
Representative? - NO, you tend to get the same profile of people who volunteer.
Bias? -
Is it hard to access samples? - As there’s no sample frame, it’s harder to get access to participants as only extremists will respond. For example, in a survey about a school, only people who either really love their school or who are angry about something in the school will respond.
Favoured by:
What is opportunity sampling?
NO SAMPLING FRAME REQUIRED
Definition: Selecting participants who are available and willing to take part at a given time. It’s only by chance they’re selected.
How it’s carried out: Most commonly it’s passer-by’s on the street.
Evaluate opportunity sampling.
Requires a sampling frame? - No
Representative?- No, as people in a given
Bias? - Slightly if you’re sticking to one area.
Is it hard to access samples? - No, as people will possibily in an area, it is a chance though.
What is systematic sampling?
REQUIRES A SAMPLING FRAME
Definition: Uses a predetermined system to select the participants.
How it’s carried out: Participants are selected from a list of a population. The sample is selected by skipping through the list at regular intervals and choosing every nth person (ie 4th person) from the population.
Evaluate systematic sampling?
Requires a sampling frame? - YES
Representative?- Fairly representative
Bias? - NO BIAS!
Is it hard to access samples? - Can be if the participants selected refuse to take part.
Favoured by: POSITIVISTS because they like representativeness to gain more stats.
What is stratified sampling?
REQUIRES A SAMPLING FRAME
Definition- Classifying the population into categories and then choosing a sample from each category in the same proportions as they are in the population.
How is it carried out: It’s carried out in 3 stages
1. Identify the categories in the target groups.
2. Work out the percentage that each subgroup represents in the total population you’re studying.
3. You’ll then select a RANDOM sample from each subgroup that reflects the percentage the represent in the total population.
(INCOMPLETE) Evaluate stratified sampling.
Requires a sampling frame? - YES Representative?- Bias? - NO BIAS! Is it hard to access samples? - Favoured by: POSITIVISTS
What is quota sampling?
NO SAMPLING FRAME REQUIRED
Definition: Quota sampling means to take a very tailored sample that’s in proportion to some characteristic or trait of a population chosen by the researcher. The population is divided into groups and samples are taken from each group to meet a quota. For example, choose two people from each Monoux pathway.
(INCOMPLETE) Evaluate quota sampling
Requires a sampling frame? - Representative?- YES, quota sampling gives some representativeness without a sampling frame. Bias?- Easy to access a sample? - Favoured by - POSTITIVISTS
What is snowball sampling?
NO SAMPLING FRAME REQUIRED
Definition: One person is interviewed (used on tough topics ie marijuana use). Then the researcher asks them to ask a friend to come be interviewed, and then they tell their friend, abd they tell their friend etc….
(INCOMPLETE) Evaluate snowball sampling
Requires a sampling frame?
Representative?
Bias?
Easy to access a sample?
What is a pilot study?
A pilot study is a mini version of what the sociologist would do in a full scale study.
Sociologists carry out pilot studies when they’re unsure if inital research will work out or if the research is too expensive to carry out.