5 (a.a.) Independent Variable
A variable is any factor in a scientific experiment that changes. Sometimes we’re the ones who changes it and sometimes it changes on its own. Let’s take a look at the two types. Let’s talk about the type that “I” can change first. “I”, “I” the letter “I”. Thanks a great way to remember Independent variables. An Independent variable is the one that “I” change. “I” intentional change this particular variable. Sometimes you might here it called the MANIPULATED variable. Which means the same thing. If I change it -“I” also manipulated it. Key thing about “I” is that there can only be ONE independent variable in the experiment - NO MORE. You can only test ONE thing. This is the thing again that “I” am changing. So let’s remember “I” (independent variable) is the one that “I” change. Do you think I said the word “I” enough yet? Let’s go on to the next. When “I” change a variable, its going cause something else to change. It depends on whether or not my independent variable changes. Since it “depends”- we call it the dependent variable. The dependent variable or sometimes called the RESPONDING variable. This is the factor that changes because of the independent variable. This is the factor that you are going to measure or observe in order to collect your results.