- What is accept rate?
- Why doesn't accept rate always appear?
- How is the accept rate calculated?
- What does "accepting an answer" mean? How do I do it?
Related: How does accepting an answer work?
Taken from the blog entry:
The following questions are not included in the accept rate calculation:
If a question has no upvoted answers, it is still included by design.
It is considered good manners to accept answers on your questions, eventually, but accepting answers is not required. In general, an accept rate of 70% or better is quite good, meaning you accept answers on 7 out of 10 questions that you ask.
Taken from this answer:
When you have decided which answer is the most helpful to you, mark it as the accepted answer by clicking on the check box outline to the left of the answer.
This lets other people know that you have received a good answer to your question. Doing this is helpful because it shows other people that you're getting value from the community. (If you don't do this, people will often politely ask you to go back and accept answers for more of your questions!)