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Understanding Experimental Design: Key Vocabulary and Concepts

This page outlines essential vocabulary related to experimental design, including hypothesis formulation and variable identification. Key terms defined include Hypothesis, Independent Variable (IV), Dependent Variable (DV), Constants, Control, Data, and Trials. A hypothesis serves as a testable prediction, structured using "If... then..." statements. The IV is the intentionally manipulated element, while the DV represents the measured outcome. Constants are conditions kept identical throughout, and controls serve as benchmarks for comparison. Repeated trials enhance data reliability.

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Understanding Experimental Design: Key Vocabulary and Concepts

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  1. Experimental Design Vocabulary Page 11 of INB

  2. Hypothesis • A testable prediction of an experiment’s outcome. If________ then ____________ statement.

  3. Independent Variable(IV) • What is purposely changed or tested in an experiment (I CHANGE) The part after the IF in the hypothesis statement

  4. Dependent variable(DV) • The outcome or results of an experiment (D= data) The part after the then in the hypothesis statement

  5. Constants • Things in an experiment that are kept the same.

  6. Control • An experimental group used for comparison and verification of results.

  7. DATA • The results of the experiment, the outcome. (DV)

  8. TRIALS • Repeated experiments to increase the validity of the data.

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