Take advantage of chance occurrences, break the weekly routine, and once in a while have the courage to let go. (inc.com)
The differences in performance were statistically significant at conventional levels, meaning that we can be highly confident that they are not just chance occurrences. (educationnext.org)
And since all events must have causes, according to this classical framework, there really are no such things as chance occurrences. (religion-online.org)