Sampling
cluster random sampling
A hospital wants to survey religious participants in their city about what they seek from a hospital chaplain, so they randomly select 5 religious meetings in the city and survey every participant in those meetings.
Stratifed Random Sampling
A large company surveys 100 employees by taking random samples of 10 managers and 90 non-managerial employees.
simple random sampling
A manager associated each employee's name with a number on one ball in a container, then drew balls without looking to select a sample of 5 employees.
conveience sampling
A quality control worker at a factory selects the first 10 items she sees as her sample for the day.
convenience sample
A store prints a request on each receipt asking customers to fill out a satisfaction survey online if they are willing
simple random sampling
A teacher puts students' names in a hat and chooses without looking to get a sample of 3 students.
systematic random sampling
Security workers at an airport randomly choose one of the first 50 people to pass through a checkpoint for extra security screening. After that person, they choose every 50th person who passes through for extra screening as well.
