Answer Happy

4. (10 points) Which statement is correct in describing the difference between repeatability and accuracy in a robotic manipulator? (circle one) (a) Accuracy is concerned with the errors associated with the robot's attempts to return to the same addressable point (b) Accuracy is usually defined as + 3 standard deviations of the mechanical errors of the manipulator (c) Repeatability is the robot's ability to position its end-of-wrist at a previously taught point in the work volume (d) Repeatability is the robot's ability to position the end of its wrist at a desired location in the work volume. (e) Repeatability is concerned with the errors associated with the robot's attempts to move to a specified location that may not be located at an addressable point.