what is a control ,variable, independent variable, experimental variabale, dependent variable
Here is one description.
An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.
A dependent variable is the response or measure of results.
Extraneous variables — other than the independent variable — potentially can affect the dependent variable, so they must be controlled. If possible, you try to keep them constant between the experimental and control group.
The experimental group receives the independent variable.
The control group is similar to experimental, except it does not receive the independent variable. Extraneous variables are balanced between experimental and control groups.
A variable is anything that can vary or change.
I hope this helps. Thanks for asking.
Potangina nyo
In an experiment, there are several key terms that are used to describe the different elements being studied. Let's break them down:
1. Control: A control is a standard of comparison in an experiment. It is used as a baseline to compare the results of the experimental group. The control group is not exposed to the independent variable and is used to establish the normal, expected outcome.
2. Variable: A variable is any factor or condition that can change or be changed during an experiment. In scientific experiments, variables are carefully controlled and manipulated to observe their effects on the outcome.
3. Independent Variable: An independent variable (IV) is the variable that is intentionally manipulated or changed by the researcher. It is the cause or input in an experiment that is believed to affect the dependent variable. For example, in an experiment testing the effect of different fertilizers on plant growth, the type of fertilizer applied would be the independent variable.
4. Experimental Variable: This term is not commonly used in scientific experiments. It might refer to any variable that is manipulated or changed during an experiment, similar to the independent variable. However, it is more accurate to use the term "independent variable" when describing the factor being manipulated.
5. Dependent Variable: A dependent variable (DV) is the variable that is measured or observed to determine the effect of the independent variable. It is the outcome or response that is thought to be influenced by the independent variable. In the plant growth example, the growth rate or height of the plants would be the dependent variable.
To summarize:
- Control: A standard of comparison used to establish the normal results.
- Variable: Any factor or condition that can change in an experiment.
- Independent Variable: The variable that is intentionally manipulated by the researcher.
- Experimental Variable: A less commonly used term that may refer to any manipulated variable.
- Dependent Variable: The variable that is measured or observed to determine the effect of the independent variable.