1. Something that varies in value.
2. A temporary storage place used in computer applications during calculation.
3. An algebraic term which is undefined but tied to the value of an expression.
In programming, a variable represents a temporary storage location, used by the program to store something.
For example, in:
var x = read();
print "you printed ", x
"x" is a variable.
In science, a variable is a factor that can be or is changed in an experiment. Often all variables except two are kept the same, while one (the independent variable) is changed for the experiment, and the other (the dependent variable) changes depending on the independent variable's value.
In mathematics, a variable is as defined above; an term which can change in value, this value being necessary to the value of an overall expression it is in.
control variables are those variables that are not changed throughout the trails in an experiment.
By definition, variable means not consistent. A variable has no fixed pattern and is liable to change. It is hard to control.
operational definition of a manipulated variable
operational definition of a manipulated variable
describes how to measure a variable or define a term. right out of my science book
An independent variable is a factor that is changed by the controller of the experiment.
The definition of variable motion is direction and/or changes in speed. This can refer to anything from walking to driving a car.
A variable is an unknown number represented by a letter
an dependent variable is one that you change in an experiment
The question should be what is the variable in the following expression? (n + 5) The answer: (n) represents the variable. See: Variable(English definition) then look up the Math/Algebra definition.
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variable definition means to declare the variable with its value. for example:- int i=10; this statement is a combination of declaration of integer i and assign its value to it,so it is a definition statement Note: assigning a value is not essential.
visithttp:/www.statisticssolutions.com/moderator-variable. it gives good definition of moderator variable
Operational definition. :)