research methods

• random sampling is randomly selecting the number of people you need which stops human biased, but may be unrepresentative
• opportunistic sampling is using anyone who is available which is very quick, but not representative of the whole population
• stratified sampling i making sure your sample matches the percentage of strata in the population which reduces bias as all groups, but is very time consuming
• quota sampling is setting quotas to ensure that certain characteristics are represented within the sample which can reduce bias, but it's hard to know if they represent the population
• snowball sampling is when a researcher asks a participant to ask a friend to participate which means studies might tKE PLACE WHERE IT MIGHT NOT OF BENN POSSIBLE, BUT IT IS UNREPRESENTATIVE
• systematic sampling s every "nth" person in a list which if assumed randemised it is unbiased, but there is a risk of patterns and unrepresentative