Statistics are like mushrooms; you’d better be pretty darned careful which ones you swallow. Specifically, I have in mind the statistic that shows that September is the worst month of the year in which to invest. Here are the specifics. Since the inception of the Dow Jones Industrial Average in 1896, the 11 months of the year that are not September have averaged a gain of 0.7% per month. September, on the other hand, has averaged a loss of 1.2%! There’s also a decade-by-decade comparison that shows September finishing 12th out of the months of the year in performance...