stephen is designing a pen for his dog in his backyard he needs to buy fencing to close off the area the diagram of the dog pen is below how much fencing does stephen need to buy

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected