Ex. large standard deviation wide bell curve would mean there is a major disparity among the understanding of a concept for developers that use the site. A smal

Ex. large standard deviation wide bell curve would mean there is a major disparity among the understanding of a concept for developers that use the site. A small standard deviation and tight bell curve would represent a more consistent understanding level among the sample population. I am assuming time being the main metric. You could also use the code quality as a metric also.