The blog is aimed at a brief explanation of LLR. For more details please refer the original paper at http://ucrel.lancs.ac.uk/papers/tedstats.pdf. Another great resource is http://tdunning.blogspot.in/2008/03/surprise-and-coincidence.html from which much of the inspiration for this blog is drawn. The approach is centered around analyzing counts of co-occurrence of events. Concretely, lets consider