Sampling scheme and sampling table : acceptance and rejection number

[former_member222064]

Hi expert,

When creating a sampling scheme using attributive inspection , in the sampling table :

- what is the meaning of those several columns c1, d1, c2,d2,.. ? how are they used?

An example would be appreciate.

Thanks

P.

[former_member207800]

It is used for single or multiple sampling plan.

You can refer single '212' and multiple '252' of sampling scheme of SAP sample data.

1) Single sampling plan

-c1, d1 could be maintained in sampling scheme

-No multiple sample would be selected in sampling procedure

-Lot sample size is equal with sample size of scheme

2) Multiple sampling plan

-c1, d1, ... max c7, d7 could be maintained in sampling scheme

-Dependent multiple sample would be selected in sampling procedure

-Lot sample size is equal with (max number of sample * sample size of scheme)

For example if c5, d5 are max sample and sample size is 8, a lot sample size will be 40.

At result recording a first sample size will be 8 then after result recording it can be changed 16 if a result cannot be valuated then 24, 32, max 40.

If a result is valuated, increasing sample size will be stopped.

Regards

Luke