RESEARCH STUDY 8.1

RESEARCH STUDY 8.1
Dr. Farah is an educational psychologist who is interested in studying the link between homework and academic achievement. Over the years, several researchers have found a link between the two, suggesting that doing homework is associated with higher grades. However, Dr. Farah is curious about the possible causal link between the two variables. She conducts the following study. At the beginning of the spring semester, Dr. Farah measures the number of hours her students spend doing homework during the preceding week and their fall GPA (a measure of academic achievement) . At the end of the semester, Dr. Farah measures the same variables again (the hours spent doing homework the preceding week and their spring GPA) . She finds the following correlations.

-Refer to Research Study 8.1 above to answer the following question. Which of the following correlations is a cross-sectional correlation?

A) Correlation C
B) Correlation D
C) Correlation E
D) Correlation F
E) None of the above

Correct Answer:

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