This will guarantee that for more than 99.73% of all cases, the future ordering and inventory needs can be predicted if the process is between the UCL and LCL and is therefore, in statistical control.

• 如果在统计控制中，这一进程在上下控制限之间，这将保证超过99.；73%25的情况下，未来的订货和库存的需求可以预测。