Question regarding Quality Management

Submitted by jedwardmartin84 on Wed, 10/15/2014 - 02:49

Hi All,

Can you please help me to understand why the second answer is correct regarding Quality Management?

Thank you!
Justin

A production process has been defined as part of an industrial equipment manufacturing project. The process is intended to produce steel bolts with a length of 20 cm. The control limits are 19.955cm and 20.045cm.

The measurements made at the end of the process yielded the following results:

20.033cm, 19.982cm, 19,995cm, 20.006cm, 19.970cm, 19.968cm, 19.963cm, 19.958cm, 19.962cm, 19.979cm, 19.959cm.

What should be done?

1. The process is under control. It should not be adjusted.

2. A special cause should be investigated, the process should be adjusted.

3. The control limits should be adjusted.

4. The measuring equipment should be recalibrated.

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dipti1pmp

Wed, 10/15/2014 - 05:33

2. A special cause should be investigated, the process should be adjusted.

as 7 points lie in one side of mean so the process is out of control and you will do a special cause investigation

got it?

jedwardmartin84

Thu, 10/16/2014 - 02:14

Got it! Thank you so much!