This was the first grouping of films from Ranker's deep analysis of our Worst All-Time Films list. These films are grouped together based on voting patterns detected from the original Worst Films list. They are ranked in order of how closely they aligned with the overall grouping (or Factor). So the top movies are the most similar to "Factor 1," whereas the lower movies are less closely associated.
Based on the films included, this group was determined to relate most closely to the "Classic B-Movie Horror" film genre. Naturally, you will notice that some of the films on the list are not representative of B-Movie horror films. This is inevitable, and indicates that there is some other correlation between the films on this list that is too subtle or obscure to be detected. We'd welcome theories in the comments.