PQ Systems Knowledge Base

Category » Sampling & Data Collection

There were 3 articles found in this category:

1. ST: Sampling and Data Collection
   Revision Date: 2005-09-06 Assume you are managing a process making 100+ parts per hour for one of your customers. This customer requires that you control your process and ship 100% good product for a critical characteristic. Your goals for initiating a process control procedure are: 1. T ...
2. ST: If we have variables data, can we use attribute sampling plans to determine if a product is good or bad. The aim is to accept or reject a lot based on sampling plan
   Revision Date: 2005-09-06 You can of course do anything that you want; however, with this scenario, you are losing information and may be increasing your costs. Variables control charts would provide you with much better information. When lots are produced with a consistent quality, the qua ...
3. ST: What is the difference between the attribute and variable sampling plans?
   Revision Date: 2005-09-06 Sampling is a complex subject. It can be divided into analytic and enumerative. In general, analytic sampling tries to predict what is going to happen (will the process stay the same, for example), and enumerative sampling tries to determine something about an exis ...