F five people are standing on line at the grocery store in the following separations:
A [7 feet] B [5.5 feet] C [6.2 feet] D [8.4 feet] E

What is the mean absolute deviation of the distance between the people?

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