In an effort to shed more light on how we work, The Times is running a series of short posts explaining some of our journalistic practices.

Here, the New York Times best-seller lists staff answers frequently asked questions about how the lists are put together, and how they’re scrutinized for accuracy and impartiality.

How many best-seller lists does The New York Times have?

We currently have 11 weekly lists and five monthly lists. This includes our new monthly audiobook fiction and audiobook nonfiction lists. The number of lists, as well as the number of books on those lists and the kinds of books tracked, has changed over the years to help reflect trends in the bookselling industry and to best inform our readers about what is being read now.