I use 'extrapolated volition' when talking about the outcome of the process upon an individual. "Coherent Extrapolated Volition" would be correct but redundant. When speaking of instantiations of CEV with various parameters (of individuals, species or groups) it is practical, technically correct and preferred to write CEV<X> regardless of the count of individuals in the parameter. Partly because it should be clear that CEV<wedridid> and CEV<all nerds> are talking about things very similar in kind. Partly because if people see "CEV" and google it they'll find out what it means. Mostly because the 'EV' acronym is overloaded within the nearby namespace.

AVERAGE(3.1415) works in google docs. It returns 2.1415. If you are comparing a whole heap of aggregations of a feature, some of which only have one value, it is simpler to just use the same formula.