Scientists like to say that the "independent" variable goes on the x-axis the bottom, horizontal one and the "dependent" variable goes on the y-axis the left side, vertical one.
This does not mean that the x variable is out partying while the y variable is whining about the x variable never being around -- that's co-dependence, which is a completely different kettle of fish.
Using the TV viewing distance data, you can imagine the researcher putting little pieces of tape on the floor and positioning her small experimental subjects at just the right distance Personally, I still mix up right and left, and I find the words "dependent" and "independent" a little confusing.
So I think "cause" the x variable and "effect" the y variable. This is not exactly right and will make some scientists apoplectic, but as a sort of memory aid, it might help you too. Type "x" for the data that should go on the x axis, "y" for the y-axis data, and "n" if the data should NOT be used in a graph. Dependent Variables - Notes -.
Definitions Independent Variable : a variable whose value does not depend on the other variable. If time is one of the variables in a situation it is usually the independent variable Dependent Variable : a variable whose value depends on the independent variable. Two pneumonics to help you remember where to graph each variable and which is independent or dependent are XY ID!!!
Identify independent and dependent variables - for teachers LearnZillion learnzillion. In this lesson you will learn how to identify independent and dependent variables by examining. Get a matching page from the teacher Complete the Matching Page and show me before moving on.
Independent or Dependent? The number of steaks I grill for dinner depends on the number of people eating dinner. The higher the temperature of water, the faster an egg will cook. Grass will grow taller if it is watered and fertilized more. The score on the final test depended on the amount of time the student studied. Boyd makes five cups of pancake batter. How many pancakes can he make? Oscar sells lemonade for several hours. How much money does he make?
Mentor: In this equation, what are the independent and dependent variables? Student: Well, for any value of x , you have to multiply it by two and then add one to get y , so y is dependent on x.
The independent variable is x , and the dependent variable is y. Mentor: Indeed. It is relatively easy to identify the independent and dependent variables in a simple two-variable equation, but what do you make of this equation:. Student: Yikes! I don't know what to do with more than two variables. I guess y would still be the dependent variable, but I don't know which of x and z is the independent variable.
Mentor: You're right on both counts. You can change either variable to any value before determining the value of y. Student: Okay, I think I've got it. The variable that's alone is the dependent variable, all other variables are independent. Mentor: That's right, but what if I change the equation around a bit? What happens when I solve the equation for z :. Student: Then But I thought you said that y was the dependent variable. Mentor: I did say that, but the independent and dependent variables are not so immutable as they might seem from an algebraic perspective.
With any equation, you can arbitrarily set any variable as the dependent variable, and then set all others as independent variables. In fact, what you've learned about dependent and independent variables has very little to do with pure algebra.
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