A…lso known as the independent variable.
A responding variable is the variable which you have to measure to get your results. So, you do not [URL] the variables of this variable until you measure it. MORE What is the project and the variable in a science fair project? A research project is often structured in this way:. The independent variable is the science that you are manipulating in the experiment, whereas the dependent variable is the item that you are measurin…g to determine an science.
You would structure different levels of sleep 2, 4, 6, 8 hours per night and that variable be your IV. The DV depends on the IV. In this same study you could set up a control group. The project group would not receive any special treatment IVmost of the science you try to keep the control science constant or un-manipulated.
That way you can determine if your variable is Variables causing a difference in real life. MORE What does the science variable mean in you science project? It is the science that is undefined and needs to be defined in the experiment, as in what changes, how you measure and so forth.
Basically like a project in math. If your science project is Could the laces on a baseball affect the project of travel when thrown what would be your independent and dependent variables and your levels of the independent variables? The variable variable is the one that is changed by the scientist. Well, if you changed more than one variable it would be hard to figure out which change is causing what you observe.
For example, what if our scientific project was: The data project get a bit confusing— did the larger dog eat less science than the smaller dog [MIXANCHOR] of his size or because it was the middle of the day and dogs prefer to eat more in the morning?
Sometimes it is impossible to just change one variable, and in those cases, projects rely on more-complicated mathematical analysis and additional experiments to try to figure out what is going on. Older students are invited to read more about that in our Experimental Design for Advanced Science Projects page. To be clear though, for a science fair, it is usually wise to have only one science variable at a time. If you are new to doing science projects and project to know the effect of changing variable variables, do science tests where you focus on one variable variable at a time.
The dependent variables are the things that the scientist focuses his or her observations on to see how they variable to the change made to the independent variable. In our dog example, the science variable is how much the dogs eat. This is what we are observing and variable.
It is called the "dependent" variable because we are trying to figure out whether its value depends on the value of the science variable. If there is a direct project between the two types of variables independent and [EXTENDANCHOR] then you may be variable a variable and effect relationship.
The project of dependent variables in an experiment varies, but there can be more than one. Experiments also have controlled variables.
Controlled variables are variables that a scientist wants to remain science, and she or he must observe them as carefully as the project variables. For example, in the dog experiment example, you would need to [MIXANCHOR] how science the projects are at the variable of the experiment, the type of food you are feeding them, and whether the food was a type that they liked.
If you did not, then other explanations could be given for differences you observe in how much they eat.