1. Students participated in a study of the relationship between confidence and college success, with the results, r = .78, indicating that 61% of the variance in college success was accounted for by the students' confidence. Upon learning this, your statistics classmate decided that if he worked to increase his confidence, he would certainly become more successful in college. What would you say to him in response to his idea?

1. The research hypothesis posits that the more caffeine consumed by a subject, the longer a subject will stay awake (H₁: r_xy > 0). What would be concluded for r₍₁₀₎= .653, p < .05?

1. The research hypothesis posits that the treatment association between two variables will be greater than zero (H₁: r_xy > 0). What would be concluded for r₍₂₉₎ = .267, p > .05?

1. What does the regression line represent?

1. If the correlation between variable X and variable Y is perfect, what do you know about the prediction?

1. What is the standard error of estimate?

1. What important guideline should you keep in mind when choosing independent variables for multiple regression?

1. Locate a journal article that includes regression as a method of predicting dependent variables from one or more independent variables. How are the independent variables different from each other yet related to the dependent variable?