What is the independent and dependent variable in psychology?
The independent variable is the variable that is controlled and manipulated by the experimenter. The dependent variable is the variable that is measured by the experimenter. In our previous example, the scores on the test performance measure would be the dependent variable.
What is dependent variable in research?
Definitions. Dependent Variable. The variable that depends on other factors that are measured. These variables are expected to change as a result of an experimental manipulation of the independent variable or variables.
What is an IV and DV in psychology?
An independent variable (IV) is a variable that is manipulated by a researcher to investigate whether it consequently brings change in another variable. This other variable, which is measured and predicted to be dependent upon the IV, is therefore named the dependent variable (DV).
What is the dependent variable answer?
A dependent variable is what you measure in the experiment and what is affected during the experiment. The dependent variable responds to the independent variable. It is called dependent because it “depends” on the independent variable.
How do you explain independent and dependent variables?
Independent vs Dependent Variables An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.
Which is the dependent variable?
The dependent variable is the variable that is being measured or tested in an experiment. For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants’ test scores, since that is what is being measured.
How do you know what the dependent variable is?
The dependent variable is the one that depends on the value of some other number. If, say, y = x+3, then the value y can have depends on what the value of x is. Another way to put it is the dependent variable is the output value and the independent variable is the input value.
What is a dependent variable easy definition?
The dependent variable is the variable being tested and measured in an experiment, and is ‘dependent’ on the independent variable. An example of a dependent variable is depression symptoms, which depends on the independent variable (type of therapy).
What are all the possible values of the independent variable?
The set of all possible values of the independent variable of a function is called the domain. The set of all possible values of the dependent variable of a function is called the range. Two things completely determine a function: the rule and the domain. Change either and you change the function.
What are the conditions of an independent variable?
The independent variable is the condition that you change in an experiment. It is the variable you control. It is called independent because its value does not depend on and is not affected by the state of any other variable in the experiment.
Is height an independent variable?
the average height of adults might give you a graph as shown below. The independent variable is average height. The dependent variable is weight. For example, height might be an independent variable in the context stated above but a dependent variable in a study on the effect of nutrition on growth rates.
Can time be an independent variable?
Time is a common independent variable, as it will not be affeced by any dependent environemental inputs. Time can be treated as a controllable constant against which changes in a system can be measured.
Is water a dependent variable?
The dependent variable is usually what scientists measure in an experiment. In this case, the amount of water is the independent variable because that is what you’re changing in the experiment: one seed gets a lot of water and the other seed only gets a little water.
Is weight a dependent or independent variable?
The variable you’re most interested in is known as the dependent variable, because it might be dependent on, or affected by, something else that you’ve measured, which is therefore an independent variable. For example people’s weight (dependent variable) might depend on their height (independent variable).
Is a response variable?
A Response Variable (or dependent variable) is that variable whose variation depends on other variables. In short, the response variable is the subject of change within an experiment, often as a result of differences in the explanatory variables.
Is temperature an independent variable?
An independent variable is one that is unaffected by changes in the dependent variable. For example when examining the influence of temperature on photosynthesis, temperature is the independent variable because it does not dependent upon photosynthetic rate.
Is food an independent variable?
The amount of food depends on the day, so it is the dependent variable. Temperature is the independent variable or the one you control. Your heart rate is the dependent variable, which you measure in response to a change in temperature.
Where does the independent variable go on a graph?
The Axes. The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis (vertical line).
Is calories an independent variable?
Calorie intake is your independent variable and weight is your dependent variable. You can choose the calories given to participants, and you see how that independent variable affects the weights.
Is a treatment an independent variable?
In an experiment, the factor (also called an independent variable) is an explanatory variable manipulated by the experimenter. Each factor has two or more levels, i.e., different values of the factor. Combinations of factor levels are called treatments.
What type of variable is speed?
A continuous random variable is a random variable which has an infinite number of values. Let s say you measure the speed (in miles per hour) of the first car to drive by your house.
Is speed qualitative or quantitative?
The two basic divisions of data are qualitative or categorical data and quantitative or numeric data. For example, typing speed is quantitative. Favorite colors are qualitative/categorical.
What type of variable is IQ?
With a discrete variable it is possible to list all possible values. Other examples of discrete quantitative variables are the number of legs on an animal, number of siblings, ACT scores, IQ scores, and shoe size.