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Hello,
We will soon recieve a shipment of products from a supplier and the quantity is 8000 pieces. The requirement from us is that they fullfill Cpk of 1.67. We have to take a sample size from this batch (lot) and verify whether they are ok or not. As i can see from Minitab 17 , a sampling plan can be made but i have some questions about he inputs deacribed there.
Measurement type: I choosed "Go/no go" is that correct?
AQL: How do i determine this value? AQL (Acceptable Quality Level) assumes no knowledge of the capability of the process that produced the part being sampled. What if the underlying performance capability is known? As in my case?
RQL: How do i determine this value? Do i have to fill in this data at all? The RQL describes what the sampling plan will reject, where as the acceptable quality level (AQL) describes what the sampling will accept. Perhaps i mix them (AQL & RQL) up?
Apha and Beta risks: Is Beta value always larger than Aplha? How do i determine those values?
Thanks in advance!
We will soon recieve a shipment of products from a supplier and the quantity is 8000 pieces. The requirement from us is that they fullfill Cpk of 1.67. We have to take a sample size from this batch (lot) and verify whether they are ok or not. As i can see from Minitab 17 , a sampling plan can be made but i have some questions about he inputs deacribed there.
Measurement type: I choosed "Go/no go" is that correct?
AQL: How do i determine this value? AQL (Acceptable Quality Level) assumes no knowledge of the capability of the process that produced the part being sampled. What if the underlying performance capability is known? As in my case?
RQL: How do i determine this value? Do i have to fill in this data at all? The RQL describes what the sampling plan will reject, where as the acceptable quality level (AQL) describes what the sampling will accept. Perhaps i mix them (AQL & RQL) up?
Apha and Beta risks: Is Beta value always larger than Aplha? How do i determine those values?
Thanks in advance!