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A variable is something that the tester can change. For example, you could put Plant A in one type of soil and Plant B in another type of soil, make sure they get the exact same amount of water, sunlight, ect., and see which one grows better.

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In which type of research is one or more variables deliberately changed?

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An investigation in science that is controlled is an experiment. The group within the experiment that is controlled is the control group. A control experiment is designed to check or correct the results of a previous experiment. It does this by removing the variable or variables operating in the other experiment. The comparison obtained is an indication or measurement of the effect of the variables concerned


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It does not have to. It is simply a study where two variables have a joint probability density function. There is no requirement for both variables to be dependent - one may be dependent on the other (which is independent).


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8 variables and 25 observations


Variables to study in thesis?

Variables to study in a thesis depend on the research question, but common ones include independent variables that impact the dependent variable. Examples include demographics, behavior, attitudes, and environmental factors. It's essential to specify these variables clearly to align with the research objectives.


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A correlational study is one where you examine correlations without manipulating any variables.


What is the case of study?

Ask Liam Stevens. what is a case study


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Ask Liam Stevens. what is a case study