Independent variable: the variable the scientist changes , the part of the experiment that the scientist has power over, there can only be one of these in each experiment, What is different between the control group and the experimental group, The thing we want to compare / we want to test, Dependent Variable: the measurements/data that is checked during/after the experiment, how the scientist knows if their hypothesis was correct, the end result of the experiment, How we know if our changes worked, Controlled variables: these have to be kept the same for all trials/tests, we do not want these things to affect our results,

Defining variables

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