Sampling Flashcards
Why do sociologists need to sample?
- too expensive and time consuming for sociologists to involve the whole population in their research
Define gatekeeper
- point of contact who can put you into contact with the participants you wish to research
Which groups of people are harder to research?
- children/students
- prisoners
- gang members
- care home residents
Why are gatekeepers essential?
- to ensure safeguarding d the participants and the researcher
What are the steps to getting a sample?
- target population
- sampling frame
- sampling method
- sample
What are the 2 types of sampling?
- random and non random
Define random sampling
- where all people of the target population have an equal chance of being picked entirely but chance
What are the pros of random sampling?
- reduces risk of samples being biased
- increases representativeness unless samples consist of the same type of people
What are the cons of random sampling?
- sampling frame is needed
Define non random sampling
- where people in the target population do not have an equal chance of being picked
What are pros of non random sampling?
- sampling frame not needed
What are the cons of non random sampling?
- less likely to be representative
- biased through researcher choice
What are the conditions needed for sampling frames?
- must have general characteristics required for specific study
- must be recent
What are the random sampling methods?
- general random sampling
- systematic random sampling
- stratified random sampling
What are the non random sampling methods?
- quota non random sampling
- snowball non random sampling
- purposive non random sampling
- volunteer non random sampling
What is general random sampling?
- where all people in target population have an equal chance of being picked entirely by chance
What is systematic random sampling?
- every other nth number is selected from the sampling frame
What is stratified sampling?
- dividing the research population into a number of different sample frames and using systematic random sampling to select a group that will comprise the research sample
What is quota non random sampling?
- select the required population based on given criteria
What is snowball non random sampling?
- one contact recruits other participants to get involved in the research
What is purposive non random sampling?
- pick participants to meet their criteria
What is volunteer non random sampling?
- sample gathered through participants putting themselves forward to be studied
What are the pros of random sampling and systematic sampling?
- everyone has same chance (reliable)
- not biased (representative)
- preferred by positivists due to its scientific and objective nature (reliable)
What are the cons of random sampling and systematic sampling?
- time consuming (lowers representativeness and generalisability)
- sampling frame won’t always provide useful information so can be biased (lowers representativeness and generalisability)
- if greater number of one type of person is picked (lowers representativeness)