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A variable is a factor that can be changed in an experiment. Identifying control variables, independent and dependent variables is important in making experiments fair.
- The Three Main Types of Variables – Independent, Dependent, and Controlled
- Confounding Variables
- Other Types of Variables
- References
An experiment examines whether or not there is a relationship between the independent and dependent variables. The independent variable is the one factor a researcher intentionally changes or manipulates. The dependent variableis the factor that is measured, to see how it responds to the independent variable. For example, consider an experiment loo...
A confounding variableis a variable that has a hidden effect on the results. Sometimes, once you identify a confounding variable, you can turn it into a controlled variable in a later experiment. In the coffee experiment, examples of confounding variables include a subject’s sensitivity to caffeine and the time of day that you conduct the experimen...
Other types of variables get their names from special properties: 1. Binary variable: A binary variable has exactly two states. Examples include on/off and heads/tails. 2. Categorical or qualitative variable: A categorical or qualitative variable is one that does not have a numerical value. For example, if you compare the health benefits of walking...
Babbie, Earl R. (2009). The Practice of Social Research(12th ed.). Wadsworth Publishing. ISBN 0-495-59841-0.Creswell, John W. (2018). Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research(6th ed.). Pearson. ISBN 978-0134519364.Dodge, Y. (2008). The Concise Encyclopedia of Statistics. Springer Reference. ISBN 978-0397518371.Given, Lisa M. (2008). The SAGE Encyclopedia of Qualitative Research Methods. Los Angeles: SAGE Publications. ISBN 978-1-4129-4163-1.May 6, 2020 · 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.
In an experiment, all of the things that can change are called variables. There are three types of variables in a good experiment: independent variables, dependent variables, and controlled variables.
The dependent variable is the factor that changes as a result of the change to the independent variable. The controlled variables (or constant variables) are factors that the scientist wants to remain constant if the experiment is to show accurate results. To be able to measure results, each of the variables must be able to be measured.
Factors Affecting Experiment Results: Understanding the Changing Variables. To obtain valid and reliable results, researchers must understand the factors that can change in an experiment and their potential impact. The following are some of the key factors affecting experiment results: 1. Independent Variables.
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Feb 3, 2022 · Methodology. Independent vs. Dependent Variables | Definition & Examples. Published on February 3, 2022 by Pritha Bhandari. Revised on June 22, 2023. In research, variables are any characteristics that can take on different values, such as height, age, temperature, or test scores.
