You can also think of the independent variable as the cause and the dependent variable as the effect. The dependent variable (height) depends on the independent variable (age).Īn easy way to think of independent and dependent variables is, when you're conducting an experiment, the independent variable is what you change, and the dependent variable is what changes because of that. An example of a dependent variable is how tall you are at different ages.
It's what changes as a result of the changes to the independent variable. The dependent variable (sometimes known as the responding variable) is what is being studied and measured in the experiment. There's nothing you or anything else can do to speed up or slow down time or increase or decrease age. Two examples of common independent variables are age and time. Either the scientist has to change the independent variable herself or it changes on its own nothing else in the experiment affects or changes it.
The independent variable (sometimes known as the manipulated variable) is the variable whose change isn't affected by any other variable in the experiment. Independent variable: What the scientist changes or what changes on its own.ĭependent variable: What is being studied/measured. There are two key variables in every experiment: the independent variable and the dependent variable. If you're studying how different types of fertilizer affect how tall plants grow, the variables are type of fertilizer and plant height. If you're studying how people feel about different television shows, the variables in that experiment are television shows and feelings.
It can be practically anything, such as objects, amounts of time, feelings, events, or ideas. What Is an Independent Variable? What Is a Dependent Variable?Ī variable is something you're trying to measure.
#SCIENTIFIC EXPERIMENTS VARIABLES HOW TO#
In this guide, we break down what independent and dependent variables are, give examples of the variables in actual experiments, explain how to properly graph them, provide a quiz to test your skills, and discuss the one other important variable you need to know. Fortunately, we make learning these concepts easy! If you don't understand what these two variables are and how they differ, you'll struggle to analyze an experiment or plot equations. Independent and dependent variables are important for both math and science.
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