What is the nature of random variation in a manufacturing process? Group of answer choices Random variation is the predictable and controllable fluctuation that occurs due to major changes in the process or system. It is the significant shift in process output that occurs when new machinery or technology is implemented. Random variation is the natural, inherent fluctuation in process output due to many small, uncontrollable factors. It is the variation that results from deliberate adjustments made by operators to optimize the production process