There were no criteria to select publishers other than a publisher responding to a request to donate books for the survey. The most stable criterion for ranking the words is the number of books in which the word was used, not the number of times the word was used. Below is the list of 100 words most frequently used in books for beginning readers. Books is the number of books where the word was used. N is the number of occurrences of the word in all books surveyed.
Books is the number of books where the word was used.
N is the number of occurrences of the word in all books surveyed.