Concomitant v's in experimental design these refer to factors that affect the dependent variable, but are not themselves influenced by the treatment (e.g.For variables in computer science, see.

A parameter is a quantity (usually a number) which is a part of the input of a problem, and remains constant during the whole solution of this problem.In general it is much easier to always call it a variable even though in some cases it is a single value.

L is also used to denote a line.Example: in x 2 6, x is the variable.An indeterminate is a symbol, commonly called variable, that appears in a polynomial or a formal power series.