Measurement-related decisions

The ability to measure reliability and related metrics provides essential information. The measurements provide a basis for trend analysis, comparisons, assessments, and priorities. The ability to make a measurement of reliability often relies on available information. Prior to the creation of the product, reliability estimates may rely on engineering judgment, whereas long after product shipments have begun, one can use field returns and detailed failure analysis to create reasonable reliability estimates.

Here are a few example questions you may encounter that indicate a measurement-related decision:

• Will this product or item survive in the intended use environment?


• How reliable is the current design?


• Are the vendor reliability claims valid?