paramater

Paramater is commonly encountered as a misspelling of parameter; the correct term is parameter. In many technical contexts, parameter refers to a quantity that defines or constrains a system, model, or function and is treated as fixed within a particular analysis. In mathematics and physics, a parameter is a quantity that, for a given situation, is held constant while other quantities vary; it helps specify a family of objects or equations. For example, the family of lines y = mx + c is defined by the parameters m and c, which determine slope and intercept. In statistics, a population parameter describes a true value of a distribution (such as the mean μ or standard deviation σ); these values are typically unknown and estimated from data, yielding statistics. In computer science, a parameter is a named input to a function or procedure; an argument is the actual value supplied when the function is called. Parameters can be fixed, default, or variable, and many languages distinguish positional, keyword, or optional parameters. In modeling and data analysis, parameters are often estimated through calibration or inference, and sensitivity analyses examine how results change as parameters vary. The term originated from Greek para beside and metron measure.