So u can receive the best overall results
You need to control the variables because if you have two or more variables in an experiment you will never know which variable caused a change or not caused a change.
Variables work by telling you what you need to change, what to observe, and what to keep the same in a experiment.
In programming, variables change all the time. In scientific testing you control variables to determine what other changes occur.
We need an equation to work with.
Variables that do not change in an experiment are independent variables.
Variables that do not change in an experiment are independent variables.
Every time the independent variables change, the dependent variables change.Dependent variables cannot change if the independent variables didn't change.
It depends what kind of experiment you do. For some you just need one. For others you may change two variables. In most cases you only change one
When There is No Need to Change the Values of the Variables In Entire lifetime of That variables then we must use that Variable as Final Variable.
Dependent variable change and independent variables do not change.
The definition of a variable is to change or changeable. All variables hold this quality.
The factors which you change (vary) are called variables.