In programming, variables change all the time. In scientific testing you control variables to determine what other changes occur.
Variables work by telling you what you need to change, what to observe, and what to keep the same in a experiment.
Controlled Variables
If you were doing an experiment to determine the effects of x ray on seed germination what variables woild you need to keep the same for all test groups?
The control variables.
A scientist would need to identify variables so you could know what to change and what to keep the same. A scientist would need to control variables so you can try to see exactly which factors are affecting the dependent variable (the thing you're measuring). Hope this helped! Because I have the exact same question on my homework!
A scientist would need to identify variables so you could know what to change and what to keep the same. A scientist would need to control variables so you can try to see exactly which factors are affecting the dependent variable (the thing you're measuring). Hope this helped! Because I have the exact same question on my homework!
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?"
So no other variables influence your results.
The variables that you keep the same between the control and experimental groups are the constant variables.
well, if you want to add apples to bananas you can't do that it's the same with variables, the coefficients can be different but to add and subtract the variables have to be the same for ex: you can't do 4x+3y because they have different variables you can do 4x+3x because they have the same variables all you do is add the coefficients and keep the variable so you would get 7x
like terms
dependent variables need an other variable