Sampling by Variables - ANSI ASQ Z1.9

This application designs a sampling plan for variables, according to the ANSI/ASQ Z1.9 tables, for a given lot size and AQL. It also calculates the estimated percent defectives in a lot, given the known or estimated variability.

For the MIL-STD-414 tables click here.

More about acceptance sampling plans.

Enter your process parameters:
Variability Unknown
Select "Unknown" if you plan to estimate the variability from the sample. Select "Known" if it is given or you know the variability from historical data
Batch/lot size (N) The number of items in the batch (lot).
AQL The Acceptable Quality Level. What to do if my AQL is different?
Inspection Level Determines the discrimination power of the plan (level)
Type of inspection Depends on the quality history (type)

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