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Extraneous variables should be controlled if possible. One way to control extraneous variables is with random sampling. Random sampling does not eliminate any extraneous variable, it only ensures it is equal between all groups. If random sampling isn’t used, the effect that an extraneous variable can have on the study results become a lot ...
When a variable isn’t independent for certain, it’s an explanatory variable. Extraneous variables are any variables that you are not intentionally studying in your experiment or test. A grouping variable (also called a coding variable, group variable or by variable) sorts data within data files into categories or groups.
Jun 24, 2024 · Maturation: The impact of time as a variable in a study; for example, if a study takes place over a period of time in which it is possible that participants naturally change in some way (i.e., they grew older or became tired), it may be impossible to rule out whether effects seen in the study were simply due to the impact of time
Extraneous Variable-Those factors which cannot be controlled. Extraneous variables are independent variables that have not been controlled. They may or may not influence the results. One way to control an extraneous variable which might influence the results is to make it a constant (keep everyone in the study alike on that characteristic).
These are extraneous variables that were not considered in the study design but can influence both the supposed cause and effect, creating a misleading correlation. Identifying and controlling for a confounding variable is crucial in research to ensure the validity of the findings.
Oct 21, 2022 · If these variables consistently differ between groups, you cannot be sure whether your results are due to the manipulation of the independent variable or to the extraneous variables. Controlling extraneous variables is a crucial component of experimental design. When an extraneous variable is controlled, it becomes a control variable.
Dec 5, 2023 · In the experiment, the main techniques of controlling extraneous variables include: 1. Exclusion method. It is the control method that excludes extraneous variables from the experiment; for example, the double-blind method is used to control the experimenter effect (the Pygmalion effect) and the desired characteristics (the placebo effect, Hawthorne effect, and John Henry effect).
