EVERYDAY SCIENCE

Detailed explanation-1: -Population density is the concentration of individuals within a species in a specific geographic locale. Population density data can be used to quantify demographic information and to assess relationships with ecosystems, human health, and infrastructure.

Detailed explanation-2: -The number of persons per unit area is known as the population density of a place.

Detailed explanation-3: -In the U.S., population density is typically expressed as the number of people per square mile of land area. The U.S. value is calculated by dividing the total U.S. population (316 million in 2013) by the total U.S. land area (3.5 million square miles).

Detailed explanation-4: -Population density is midyear population divided by land area in square kilometers. This ratio can be calculated for any territorial unit for any point in time, depending on the source of the population data.

Detailed explanation-5: -A descriptive measure for an entire population is a ‘’parameter. ‘’ There are many population parameters. For example, the population size (N) is one parameter, and the mean diastolic blood pressure or the mean body weight of a population would be other parameters that relate to continuous variables.