An analysis of Agatha Christie novels over the decades by murder's age, gender, motive, method, profession and relationship to the victim
It does not really prove or illustrate anything in the real world but is probably fun for Agatha Christie fans to read. It finishes off with some extra dimensions mapped out.
She is actually one of my favourite authors and I have just about every book she published in paperback. It is over a hundred books.
See Bloomberg - Are you a robot?