A series of tile patterns is shown below. Consider the function that represents the number of white tiles in each figure.
Figure 1
Figure 2
Figure 3
Figure 4
Select all statements that are true.

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