Reference no: EM133602105
Question 1
An educational psychologist is studying motivational strategies for high school students. She designs an experiment to test the impact of a group reward on homework completion. The students' teacher will provide coffee and treats from a favorite coffee shop for the class who was the highest rate of weekly homework submission.
Identify the independent variable (IV) and dependent variable (DV) for this study.
Describe how you would operationalize the DV.
Name two possible confounding variables you could encounter.
Question 2
Two people are on a first date and are going to dinner and then a movie. They leave the restaurant after a leisurely meal during which they both ate until they were no longer hungry. However, when they walk inside the movie theater, they agree to get some popcorn, snacks, and drinks.
What is a statement reflecting a positive correlation based on this scenario. Explain
What is a statement reflecting a negative correlation based on this scenario. Explain
Explain why correlations do not necessarily reflect a causal relationship.
Question 3
Read the following hypothesis: high school students who spend greater than 10 hours per week studying are more likely to score in the top ten percent on the SAT.
Identify the type of correlation described in the hypothesis.
Identify an independent variable (IV) and dependent variable (DV) for an experiment based on this hypothesis. Describe how you would operationalize the IV and DV.
Give one example of a confounding variable that may impact the hypothesis.