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Sci: Experi. Design
Experimental Design Vocabulary
Term | Definition |
---|---|
variable | factors or things that are changed in an experiment |
independent variable (IV) | the factor that is purposely changed by the experimenter; the "I change" factor |
levels of independent variable | changes that are made in the independent variable |
dependent variable (DV) | the factor that responds |
hypothesis | a prediction about a relationship between the IV and the DV, written as an If... Then... statement |
constants | all factors that remain the same and have a fixed value |
control | the standard for comparing experimental effects |
repeated trials | the number of experimental repetitions, objects, or organisms tested at each level of the independent variable |
title | a statement describing an experiment or data table, written in the form of: "The Effect of Changes in the Independent Variable on the Dependent Variable" |
experimental design diagram | a diagram that summarizes the IV, DV, constants, control, number of repeated trials, hypothesis, and title |