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What is the most critical phase in product life cycle assessment?
Independent Variables
Variables in an experiment or model that are manipulated to determine their effect on dependent variables.
Observations
Specific instances of data collected or noticed during an experiment or study.
Quadratic Model
A statistical model used to describe a relationship between a response variable and one or more predictor variables where the relationship is parabolic.
Interaction Term
An additional term in a statistical model that represents the effect on the response variable of combining two or more variables.
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