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Type Sc are the dustiest and flattest of the galaxies.
Correlational Design
A research method used to examine a relationship between two or more variables, without inferring a causal relationship.
Longitudinal Research
A research method that involves observing and collecting data from the same subjects repeatedly over a period of time.
Operational Definition
A clear, precise description of how variables are measured or defined in a research study.
Abstract Conceptual Variable
A variable that represents intangible qualities or ideas that are not directly observable but can still be measured through indirect means.
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