Played times. Print Share Edit Delete. Live Game Live. Finish Editing. This quiz is incomplete! To play this quiz, please finish editing it. Delete Quiz. Question 1. Catherine is testing which soil will help grass grow the tallest.Examples of Independent and Dependent Variables
When experimenting with plants to see if they grow better with or without fertilizer, a scientist uses six bean plants and one type of fertilizer. What type of variable is the fertilizer? An experiment is performed on plants to see how different liquids affect plant growth.
Each plant in the experiment is given a different liquid; water, apple juice, or milk. In this investigation, the independent variable is The amount of sunlight. Ahlers set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable? Distance traveled by the ball. Where the experiment took place.
Jonathan set up the same experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
Who set up the experiment Jonathan etc. Daniel was investigating how fast it took mice to react to different sounds. How fast mice reacted.General Education. Independent and dependent variables are important for both math and science. If you don't understand what these two variables are and how they differ, you'll struggle to analyze an experiment or plot equations.
Fortunately, we make learning these concepts easy! In this guide, we break down what independent and dependent variables aregive 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.
A variable is something you're trying to measure. It can be practically anything, such as objects, amounts of time, feelings, events, or ideas. If you're studying how people feel about different television shows, the variables in that experiment are television shows and feelings.
If you're studying how different types of fertilizer affect how tall plants grow, the variables are type of fertilizer and plant height. There are two key variables in every experiment: the independent variable and the dependent variable. The independent variable sometimes known as the manipulated variable is the variable whose change isn't affected by any other variable in the experiment.
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. Two examples of common independent variables are age and time. There's nothing you or anything else can do to speed up or slow down time or increase or decrease age.
They're independent of everything else. The dependent variable sometimes known as the responding variable is what is being studied and measured in the experiment. It's what changes as a result of the changes to the independent variable. An example of a dependent variable is how tall you are at different ages. The dependent variable height depends on the independent variable age.
An 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. You can also think of the independent variable as the cause and the dependent variable as the effect.
It can be a lot easier to understand the differences between these two variables with examples, so let's look at some sample experiments below.Independent and dependent variables.
Search Speak now. Independent And Dependent Variables Quiz. Questions All questions 5 questions 6 questions 7 questions 8 questions 9 questions 10 questions 11 questions 12 questions 13 questions 14 questions 15 questions.
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More Variable Quizzes. Featured Quizzes. Quiz: Why am I so bored? Related Topics. Questions and Answers. Remove Excerpt. Removing question excerpt is a premium feature. If you chew 2 different flavors of gum which flavor will last longer? What is the independent variable? If we add weight to a helicopter, will it stay in the air longer?
Independent And Dependent Variables Quiz
What is the dependent variable? What is the dependent variable in this question: If we make the walls of a boat higher, will it float longer? If we add more icing to a cake, will it produce mold faster? Miss Snooks set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp.
Justin is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. What is the control variable? How does watching TV while studying affect a students mark? Which variable is highlighted in yellow? What effect does decreasing the temperature of a room have on the life of a battery?
Back to top.Printable PDF k. Answer: A variable is an object, event, idea, feeling, time period, or any other type of category you are trying to measure. There are two types of variables-independent and dependent. Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable. Other factors such as what they eat, how much they go to school, how much television they watch aren't going to change a person's age.
In fact, when you are looking for some kind of relationship between variables you are trying to see if the independent variable causes some kind of change in the other variables, or dependent variables. Answer: Just like an independent variable, a dependent variable is exactly what it sounds like. It is something that depends on other factors. For example, a test score could be a dependent variable because it could change depending on several factors such as how much you studied, how much sleep you got the night before you took the test, or even how hungry you were when you took it.
Usually when you are looking for a relationship between two things you are trying to find out what makes the dependent variable change the way it does.
Many people have trouble remembering which is the independent variable and which is the dependent variable. An easy way to remember is to insert the names of the two variables you are using in this sentence in they way that makes the most sense. Then you can figure out which is the independent variable and which is the dependent variable:.
Independent variable causes a change in Dependent Variable and it isn't possible that Dependent Variable could cause a change in Independent Variable. We see that "Time Spent Studying" must be the independent variable and "Test Score" must be the dependent variable because the sentence doesn't make sense the other way around. Fun Graphing Exercise! What are Independent and Dependent Variables? Question: What's a variable?
Question: What's an independent variable? Question: What's a dependent variable? Then you can figure out which is the independent variable and which is the dependent variable: Independent variable causes a change in Dependent Variable and it isn't possible that Dependent Variable could cause a change in Independent Variable.
Close Window.Published on May 20, by Lauren Thomas. Revised on September 18, In research, variables are any characteristics that can take on different values, such as height, age, species, or exam score. In scientific research, we often want to study the effect of one variable on another one.
For example, you might want to test whether students who spend more time studying get better exam scores. The variables in a study of a cause-and-effect relationship are called the independent and dependent variables.
Independent Variable Definition and Examples
Table of contents Independent and dependent variables in experiments Variables in other types of research Visualizing independent and dependent variables Frequently asked questions. In experimental researchthe independent variable is manipulated or changed by the experimenter to measure the effect of this change on the dependent variable. To test whether the medication is effective, you divide your patients into two groups.
One group takes the medication, while the other group takes a sugar pill placebo. The independent variable is usually applied at different levels to see how the outcome differs. You can apply just two levels e. You can also apply multiple levels e. Instead, they must find already-existing examples of the independent variable, and investigate how changes in this variable affect the dependent variable.
Instead, you look at a state that raised its minimum wage last year, and compare it to a neighboring state that did not. By comparing the difference in outcomes between the two states and accounting for other factorsyou can investigate whether the change in minimum wage had an effect on employment rates. These are known as confounding variables. In types of research where the exact relationship between variables is less certain, you might use different terms for independent and dependent variables.
Sometimes, the variable you think is the cause might not be fully independent — it might be influenced by other variables. In this case, one of these terms is more appropriate:. Scribbr editors not only correct grammar and spelling mistakes, but also strengthen your writing by making sure your paper is free of vague language, redundant words and awkward phrasing.
See editing example. Researchers often use charts or graphs to visualize the results of their studies. For instance, how might a graph look from our example study on the impact of a new medication on blood pressure? You can think of independent and dependent variables in terms of cause and effect: an independent variable is the variable you think is the causewhile a dependent variable is the effect.
In an experiment, you manipulate the independent variable and measure the outcome in the dependent variable. For example, in an experiment about the effect of nutrients on crop growth:. Defining your variables, and deciding how you will manipulate and measure them, is an important part of experimental design. Determining cause and effect is one of the most important parts of scientific research.
What Are Independent and Dependent Variables?
You want to find out how blood sugar levels are affected by drinking diet soda and regular soda, so you conduct an experiment. The value of a dependent variable depends on an independent variable, so a variable cannot be both independent and dependent at the same time.
It must be either the cause or the effect, not both! Yes, but including more than one of either type requires multiple research questions.The two main variables in a science experiment are the independent variable and the dependent variable. Here's the definition on independent variable and a look at how it's used:.
An independent variable is defines as the variable that is changed or controlled in a scientific experiment.
It represents the cause or reason for an outcome. Independent variables are the variables that the experimenter changes to test their dependent variable. A change in the independent variable directly causes a change in the dependent variable. The effect on the dependent variable is measured and recorded. Common Misspellings: independant variable.
When graphing data for an experiment, the independent variable is plotted on the x-axis, while the dependent variable is recorded on the y-axis. Share Flipboard Email. Anne Marie Helmenstine, Ph. Chemistry Expert. Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels. Facebook Facebook Twitter Twitter. Updated January 09, Key Takeaways: Independent Variable The independent variable is the factor that you purposely change or control in order to see what effect it has.
The variable that responds to the change in the independent variable is called the dependent variable. It depends on the independent variable.
The independent variable is graphed on the x-axis.There are two types of experiments when it comes to any experiment.
Independent and dependent variables
The variable varies depending on which is being tested in the experiment and which one is controlled in the experiment. Test out how well you understood the two in class by taking the quiz below.
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She has three African violets. She puts one on the balcony, one by the kitchen window, and one on the mantel in the living room. Each plant has the same size pot and the same soil, and Lauren gives each plant the same amount of water.
The 2 variables : 1. The independent variable IV changes the dependent variable DV. Does heating a cup of water allow it to dissolve more sugar? This variable MUST be measurable. Back to top.