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pipboyover9000 t1_j2nuvru wrote

Reply to comment by [deleted] in [OC] Shrinkflation has hit my Breakfast Burrito last year. This is the last 7 years of Saturday breakfast burrito weight from the same restaurant. I have been tracking them in excel. You can see a covid dip between Jan - Aug 2020. by chiefd59

Control limits are set by the organization running the process and are only used as an indicator to an engineer that a process is out of the desired control. Using control limit methods is irrelevant here as any limit average is assumed to not change over time which is clearly incorrect and the data would need to be normalized first.

The calculations that you speak of are very weak when you only take one sample at a time, which is why you see guys on the floor pull off like 3-5 at a time and average them.

Did you just take a manufacturing class or something?

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