Chapter 12: Correlation Concepts Score: 2/21 2/21 answered Question 2 A correlation of r = .85 is found between weekly sales of firewood and cough drops over a 1-year period. Which of the following is true? O (a) There is a pretty strong positive linear relationship between sales of firewood and cough drops. (b) Fire must be the cause of coughing. O (c) Temperature is a possible lurking variable that is "behind" this relationship. O (d) Both (a) and (c) are true. O (e) None of the above. 1 Question Help: Message instructor Submit