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If an optical system consists only of an object and a single convex mirror,
Correlational Studies
Research methods that examine the relationship between two or more variables without manipulating them.
Longitudinal Study
A research design that involves repeated observations of the same variables (e.g., people) over short or long periods of time.
Cross-Sectional Study
A study that analyzes data from a population at a specific point in time.
Case-Control Study
A type of observational study that compares individuals with a specific condition or disease (cases) to others who do not have the condition (controls), looking for factors that may contribute to the disease.
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