Go to the library and locate three examples of research studies in your area of interest in which linear regression was used. It's okay if a study contains more than one predictor variable. Answer the following questions for each study.

a. What is one independent variable? What is the dependent variable?

b. If there is more than one independent variable, what argument does the researcher make that these variables are independent from one another?

c. Which of the three studies seems to present the least convincing evidence that the dependent variable is predicted by the independent variable, and why?