Find the Cost of a $3,000 Refrigerator That Is on Sale

question 2

Multiple Choice

Find the cost of a $3,000 refrigerator that is on sale for 40% off.

• A) $1,800
• B) $7,500
• C) $2,960
• D) $4,200
• E) none of these

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Definitions:

Longitudinal Design

A research design that involves repeated observations of the same variables or groups over a period of time, allowing for the study of changes and development.

Prospective Design

A research design that follows participants forward over a period of time to observe future outcomes.

Cross-sectional Design

A research design that analyzes data from a population, or a representative subset, at a specific point in time to examine relationships between variables.

Observational Study

A research method involving the collection of data without interference with the subjects’ natural environment.