One advantage of displaying correlational data in a scatter plot is that you can literally “see” the relationship in the graph.

Question 1 One advantage of displaying correlational data in a scatter plot is that you can literally “see” the relationship in the graph.

1. a. In a scatter plot, what pattern of points would indicate a positive relationship between variables?
   b. What pattern would indicate a negative relationship between variables?
   c. What pattern would indicate no relationship between variables?

2. Question 2 On page 317, a correlational study was described that reported a relationship between adolescent sexual behavior and the sexual content of television programs. Because the participants ranged in age from 12 to 17, it is possible that age is a third variable that might explain the observed relationship. (Older participants are more likely to watch programs with sexual content and more likely to engage in sexual behaviors.) Explain how multiple regression could be used to “control” the influence of participant age.

3. Question 3 What is the general characteristic that differentiates descriptive research deisgns from other types of research? For example, what differentiates the survey research design from other research that uses surveys to obtain measurements?

4. Question 4 Describe each of the three types of descriptive research deisgns.

5. Question 5 Most descriptive research designs gather information from a group of participants. However, the case study design focuses on a single individual. What are the advantages and disadvantages of describing a single individual as compared to describing a group?