1. A process is in statistical control when only causes are present. (Assignable / chance / random) 2. Control charts cannot be used to determine process capability. (True / False) 3. Control charts for variable always come in pairs. (False / True) 4. As the subgroup size decreases, the control limits in a control chart ... (come close / Move away / do not change). 5. The revised control limits are used as trial control limits for future data collection. (True / False) 6. If a process is in statistical control, the process is stable, but a non-conforming product can be still produced. (True / False)