You probably know by now that a variable can be any item that you would like to measure. It can be used for math; it can also be used for science. The variable can be any category that you possibly may think of. There are two types of variables that are available, namely the independent variable and the dependent variable. The independent variable is a variable that will be able to have its own value without having to rely on anything else. It is able to stand alone and it will not be affected by all the other variables that you may be trying to measure alongside this variable. One example of an independent variable is age because you know that you can never change the year that you are born. Other factors that may be related to you like your hair, taste and clothing can change but your age will still remain the same and unchangeable no matter what you do.