Identify the sampling method. a) Several groups of students are gathered outside the food service area on campus during lunch time. One group is randomly selected for a sample. What sampling method is this an example of ________. b) Cars are in line to order at In-N-Out in Glendale on a Friday night. A random start begins with the fourth car then every 5th car after that is selected for the sample. What sampling method is this an example of ________.
1) Stratified sampling
2) Random sampling
3) Systematic sampling
4) Cluster sampling