Hey everyone, welcome to this lecture control limits was a specification limits. In the previous lecture you had learned what are control limits, there is another term called specification limits. In my experience, most students get confused understanding the difference between the control limits and specification limits. Hence, I have added a separate lecture articulating the difference between the two variables. So, specification limits are the matrix or targets that are given to you by the customer. A key point to remember here is that the specification limit is given by the customer, whereas the control limits are calculated based on the Process Performance using the formula mean plus three standard deviations and mean minus three standard deviations.

If any data point goes beyond specification limit The process is indeed producing defects. However, if any data point goes beyond control limits, the process will be termed as out of control, but it may or may not be producing defects. I repeat, if any data point goes beyond the control limits, the process will be termed as out of control, but it may or may not be producing defects. specification limits change only when the customer asks you to change them. Whereas, control limits change when there is a verifiable change in the process performance. With an understanding of this difference between control limits and specification limits, it is now important for you to understand the characteristics of an in control process.

You will learn that in the next lecture. Thank you for attending. See you In the next one