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Use the graph to find the intervals on which it is increasing, decreasing, or constant.
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Experimental Study Designs
Research methods that involve the manipulation of one or more variables to determine their effect on a certain outcome, often including control groups and randomization.
Objective Test
A type of assessment tool designed to measure an individual's knowledge or abilities in a specific area with minimal subjectivity from the tester.
Factor Analytic
A statistical method used to identify underlying variables, or factors, that explain patterns of correlations among observed variables, commonly used in psychology.
Test Writer's Construct
The underlying concept or theory that a test developer believes is being assessed by a psychological test or measurement.
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