Using Ngrams for Comparing the Popularity of titles by Agatha Christie June 4, 2015Big DataAgatha Christiedjeannerod (Click to enlarge) The four graphs reproduced here represent Google Ngrams of the popularity of the title of pre-war novels by Agatha Christie in the Google books corpus for the period 1950-2000 AdvertisementShare this:TwitterFacebookLike this:Like Loading... Related