A quantity associated with a population.
Merriam-Webster Online Dictionary
parameter (noun)1.
a) an arbitrary constant whose value characterizes a member of a system (as a family of curves) , also a quantity (as a mean or variance) that describes a statistical population
b) an independent variable used to express the coordinates of a variable point and functions of them - compare parametric equation
2.
any of a set of physical properties whose values determine the characteristics or behavior of something - parameters of the atmosphere such as temperature, pressure, and density
3.
something represented by a parameter a characteristic element , broadly - characteristic element factor political dissent as a parameter of modern life
4.
- limit boundary usually used in plural the parameters of science fiction
Measure, principle, rule, norm, yardstick
