CTR depends on so many factors... including the following (and so many more): the vertical, your average position, the strength of competition, how well your ad is written, how close your ad matches the query, the match type of the keyword, seasonality, the day of week/time of day, the particular syndication partners that drive traffic to this keyword, what country you're in, who you're targeting, and more.
So, it's very difficult to get a useful reply to your question... on a broad match for a very competitive keyword, I'd love that CTR. On a keyword that's my brand name, I'd be very disappointed.