AP Exam Practice
Dr. Swope
Mrs. Schmidlap wants to study whether homework actually helps
her students learn. But she doesn't know the best way to study the
issue. Given the three research methods below, explain how Mrs.
Schmidlap might study her question.
• Survey
• Cross-sectional
• Case study
• Explain the importance of operationally defining
aspects of her study
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Two technicians are discussing oil changes. technician a says that waste oil and old filters need to be disposed of according to the law. technician b says that old filters can be returned to the parts department for a core value. which technician is correct?           a. technician a only   b. both technicians a and b   c. technician b only   d. neither technician a nor b