a factor that can be varied or manipulated in an experiment :) - Ashleigh
Any variable can be declared as the independent variable, then the other would be the dependent variable. However, it is quite common to arbitrarily define y as the dependent variable - a variable that depends on x.
An equation can often be re-written so that the subject of the equation is changed. This makes it nonsense to define either variable as independent.
I define an variable by saying x- an value
Take the expression y = f(x) where f is a function relating y in terms of x. x is the input - the independant variable. y is the output - the dependant variable because it's value depends on x.
State what the variable represents in the equation.
Any variable can be declared as the independent variable, then the other would be the dependent variable. However, it is quite common to arbitrarily define y as the dependent variable - a variable that depends on x.
An equation can often be re-written so that the subject of the equation is changed. This makes it nonsense to define either variable as independent.
The gradient of a curve is the rate of change in the dependent variable relative to the independent variable.
condition that changes in response to the manipulated variable in an experiment.
Independent variables answer the question "What do I change?"Dependent variables answer the question "What do I observe?"Controlled variables answer the question "What do I keep the same?"
I define an variable by saying x- an value
Before performing an experiment, you should know the independent variable, which is the factor you will manipulate to observe its effect on the dependent variable. Understanding this variable is crucial as it helps define the experimental design and ensures that you can isolate the effects of your manipulation. Additionally, having a clear hypothesis related to the independent variable can guide your experiment's objectives.
6
Take the expression y = f(x) where f is a function relating y in terms of x. x is the input - the independant variable. y is the output - the dependant variable because it's value depends on x.
They define a variable by saying n equals some value.
A dependent (responding) variable is a condition that can change as the result of an independent variable's alteration. It can also be referred to as an effect. Every well-designed experiment has three kinds of variables. 1) Control variables, which are the same for each stage of the experiment. 2) Independent (manipulated) variables, which represent what is being changed by experimenters. 3) Dependent (responding) variables, which respond to the change and ideally are the direct result of the change in the independent (manipulated) variables.
State what the variable represents in the equation.