Question

Please answer the following True or False 

1) The variation in the output of processes that are out of control can be entirely attributed to random behavior.

2) The elimination of common causes of variation is typically the responsibility of workers, not management.

3) Special causes of variation can often be diagnosed and eliminated by workers or their immediate supervisors.

4) Most processes are naturally in a state of statistical control.

Answer 1

1) The variation in the output of processes that are out of control can be entirely attributed to random behavior.

True. The variation that can be controlled is not attributed to random behaviour as it is the explained variation or assignable variation.

2) The elimination of common causes of variation is typically the responsibility of workers, not management.

False. The elimination of causes of variation is not necessarily the responsibility of workers only. Management should also take the responsibility of elimination and help workers act on it accordingly.

3) Special causes of variation can often be diagnosed and eliminated by workers or their immediate supervisors.

True. The causes of variation can be diagnosed and eliminated by both workers and supervisors if the variations are assignable not random.

4) Most processes are naturally in a state of statistical control.

False. This statement is not true as it depends on the process and sample.