sampling

• Population is a large group of individuals that a researcher is interested in searching in.
• Sample is a smaller group of target audience of a target population.
• Bias is when certain groups are over or under populated in the sample, which could make one group's opinion more and make the sample less generalisable.
• Generalisability is when the sample is representative of the general population.
• Random sampling is when all members of the target audience have an equal chance of being picked.
• Lottery method is when all participants are given a number and randomly picked.
• Systematic sampling is when the nth member of the target audience is chosen.
• Stratified sampling is when the composition of the sample reflects the proportion of people in certain subgroups within the population.
• Opportunity sampling is when anyone who is willing and available is asked.
• Volunteer sampling is when participants select themselves to be a part of the sample.