I have a new hobby - a saltwater fish tank that will contain mostly live corals (called a reef tank). I am currently in the planning stage and am gathering knowledge to give me the best chance of success with my tank. As part of the planning stage, I reached out to 50 experienced Central Florida reefers (people who currently have a reef tank) and asked them to provide the following information: Size of the tank (in gallons), Type of Lighting used (Florescent, LED, Hybrid, or Other), whether it is their first tank (Yes or No), and how long (in years) they have been in the hobby.

Of the 50 reefers sampled, it was the first tank for 11 of them. If I want to estimate the average size of all first-time Central Florida reefers, what analysis should I employ?