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What purchased materials have greater value-added than raw materials?
Independent Variable
The variable that is intentionally changed or manipulated in an experiment to observe its effect on the dependent variable.
Dependent Variable
In experimental and statistical research, the variable being tested and measured, subject to change under the influence of the independent variable.
Hypothesis
A proposed explanation for a phenomenon, made as a starting point for further investigation.
Theory
A system of ideas or principles intended to explain certain phenomena or observations, grounded in evidence and subject to testing.
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