controllable

adj

1. Able to be controlled; subject to regulation or command.

   “For instance, such nonweather factors as insects, disease, errors of management, accidents, and other factors may not be considered controllable […]”

   “A spring-loaded reducing valve, controllable from the cab, admitted h.p. steam to both h.p. and l.p. cylinders whenever necessary, as, for example, on starting; [...].”

noun

1. Any factor that can be controlled.

   “The widest variety of marketing research studies focus on the influences of controllables—products, distribution, promotion, and price.”