Arithmetic density measures the total number of people living in an area.It is important data to understand so that relationships between populations is known
Physiological Density
The physiological density or real population density is the number of people per unit area of arable land.
This is important to know so that agriculturally an area of land is updated with present data.
Agricultural Density
Agricultural density measures the number of farmers specifically on each unit of farmland.It measures the total number of people and divides them between the total amount of farm-able land.