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A variable is anything that can change and be measured. Two important types of variables are: Independent variables – the variable that is being changed during the experiment. Dependent...
Revision notes on 1.1.2 Identification of Variables for the OCR A Level Biology syllabus, written by the Biology experts at Save My Exams.
What needs to be considered when investigating a phenomenon? Valid measurements. In general, scientists answer questions or work out explanations based on repeatedly collecting and analysing data....
- Independent Variable
- Dependent Variable
- Examples of Independent and Dependent Variables
- How to Tell The Independent and Dependent Variable Apart
- How to Graph Independent and Dependent Variables
- References
The independent variable is the factor the researcher changes or controls in an experiment. It is called independent because it does not depend on any other variable. The independent variable may be called the “controlled variable” because it is the one that is changed or controlled. This is different from the “control variable,” which is variable ...
The dependent variable is the factor that changes in response to the independent variable. It is the variablethat you measure in an experiment. The dependent variable may be called the “responding variable.”
Here are several examples of independent and dependent variables in experiments: 1. In a study to determine whether how long a student sleeps affects test scores, the independent variable is the length of time spent sleeping while the dependent variable is the test score. 2. You want to know which brand of fertilizer is best for your plants. The br...
If you’re having trouble identifying the independent and dependent variable, here are a few ways to tell them apart. First, remember the dependent variable depends on the independent variable. It helps to write out the variables as an if-then or cause-and-effect sentence that shows the independent variable causes an effect on the dependent variable...
Plot or graph independent and dependent variables using the standard method. The independent variable is the x-axis, while the dependent variable is the y-axis. Remember the acronym DRY MIX to keep the variables straight: D = Dependent variable R = Responding variable/ Y = Graph on the y-axis or vertical axis M = Manipulated variable I = Independen...
Babbie, Earl R. (2009). The Practice of Social Research(12th ed.) Wadsworth Publishing. ISBN 0-495-59841-0.di Francia, G. Toraldo (1981). The Investigation of the Physical World. Cambridge University Press. ISBN 978-0-521-29925-1.Gauch, Hugh G. Jr. (2003). Scientific Method in Practice. Cambridge University Press. ISBN 978-0-521-01708-4.Popper, Karl R. (2003). Conjectures and Refutations: The Growth of Scientific Knowledge. Routledge. ISBN 0-415-28594-1.Basically, a variable is any factor that can be controlled, changed, or measured in an experiment. Scientific experiments have several types of variables. The independent and dependent variables are the ones usually plotted on a chart or graph, but there are other types of variables you may encounter.
There are three main types of variables: measurement variables, which are expressed as numbers (such as 3.7 mm); nominal variables, which are expressed as names (such as "female"); and ranked variables, which are expressed as positions (such as "third").
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A variable is a part of a science experiment which can change. In all science experiments variables can be: changed. measured, or. controlled. It is really important that only one variable...
