What is the arithmetic mean of the following data? Data: 3, 6, 9, 12, 15 A. 7 B. 9 C. 12 D. 8 0 0 votes Article Rating Subscribe Login Notify of new follow-up comments new replies to my comments Label {} [+] Name* Email* Label {} [+] Name* Email* 0 Comments Oldest Newest Most Voted Inline Feedbacks View all comments