Purpose:
Acceptance Sampling Analysis provides a statistical framework for deciding whether to accept or reject incoming material lots based on information obtained from a representative sample.
Installation:
Download the file and drag-and-drop onto Origin. A new corresponding icon will appear in the Apps Gallery window. A panel containing three icons is displayed when launching the APP.
Note:
- Attributes Acceptance Sampling
Develop a plan to determine how many samples to inspect (sample size) and how many defects or defectives are allowable within the sample (acceptance number) to meet specified criteria.
Key input parameters:
- Objective: Create a plan or compare plans
- Measurement Type: Defective (Binomial) or Defect Counts (Poisson)
- Units for Quality Levels: Proportion, Percentage or Per Million
- Acceptable Quality Level (AQL): Highest level of defective/defect rate that is acceptable by supplier.
- Rejectable Quality Level (RQL or LTPD): Highest level of defective/defect rate that is acceptable by consumer.
- Producer's Risk (Alpha): 1 - alpha represents the probability of accepting a lot at AQL. This entry is shown if the Objective is set to create a sampling plan.
- Consumer's Risk (Beta): 1- beta represents the probability of accepting a lot at RQL. This entry is shown if the Objective is set to create a sampling plan.
- Sample Sizes: Multiple sample sizes of the sampling plan to compare. This entry is shown if the Objective is set to compare sampling plans.
- Acceptance numbers: Multiple acceptance numbers of the sampling plan to compare. This entry is shown if the Objective is set to compare sampling plans.
- Lot Size (Optional): Entire shipment sample size. It is required for calculating AOQ and ATI curves.
- Variables Acceptance Sampling (Create/Compare)
Develop a plan to determine how many samples to inspect (sample size) and what the critical distance is to meet specified criteria.
Key input parameters:
- Objective: Create a plan or compare plans
- Units for Quality Levels: Proportion, Percentage or Per Million
- Acceptable Quality Level (AQL): Highest level of defective rate that is acceptable by supplier.
- Rejectable Quality Level (RQL or LTPD): Highest level of defective rate that is acceptable by consumer.
- Producer's Risk (Alpha): 1 - alpha represents the probability of accepting a lot at AQL. This entry is shown if the Objective is set to create a sampling plan.
- Consumer's Risk (Beta): 1- beta represents the probability of accepting a lot at RQL. This entry is shown if the Objective is set to create a sampling plan.
- Sample Sizes: Multiple sample sizes of the sampling plan to compare. This entry is shown if the Objective is set to compare sampling plans.
- Acceptance numbers: Multiple acceptance numbers of the sampling plan to compare. This entry is shown if the Objective is set to compare sampling plans.
- Lower Spec: Minimum acceptable value for a quality characteristic.
- Upper Spec: Maximum acceptable value for a quality characteristic.
- Historical Standard Deviation: Known standard deviation on prior knowledge
- Lot Size (Optional): Entire shipment sample size. It is required for calculating AOQ and ATI curves.
- Variables Acceptance Sampling (Accept/Reject Lot)
Decide whether to accept or reject the lot based on the data from a representative sample.
Key Input Parameters:
- Measurement Data: Sample Data
- Critical Distances (k Values): Distance to the mean that is used to compare with the specification limits
- Lower Spec: Minimum acceptable value for a quality characteristic.
- Upper Spec: Maximum acceptable value for a quality characteristic.
- Historical Standard Deviation: Known standard deviation on prior knowledge
Sample OPJU File:
- This app provides a sample OPJU file. Right click the App icon in the Apps Gallery window, and choose Show Samples Folder from the short-cut menu. A folder will open. Drag-and-drop the project file ASVData.opju from the folder onto Origin.