meanless

Etymology
From.

Adjective

 * 1)  Meaningless, lacking meaning.
 * 2)  Having no (mathematical) mean, or having a mean of zero.
 * 3) * 1990, in Experimental Robotics I: The First International Symposium Montreal,, Springer-Verlag, ISBN 9780387521824, page 208:
 * is stopped ($$n_k=0$$) if either the estimation error is within a "dead zone" ($$\left | c_k \right | \le \left | \delta_{kp} \right |$$), or the arrival data are meanless ($$\gamma_k=0$$).
 * 1) * 1990, in Experimental Robotics I: The First International Symposium Montreal,, Springer-Verlag, ISBN 9780387521824, page 208:
 * is stopped ($$n_k=0$$) if either the estimation error is within a "dead zone" ($$\left | c_k \right | \le \left | \delta_{kp} \right |$$), or the arrival data are meanless ($$\gamma_k=0$$).