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Random Failure Graphical Analysis Disclosure Number: IPCOM000034246D
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-27

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Breyfogle, FW Wheeler, S [+details]


Random failure tests are often described using the Poisson process; however, tables are not generally available that describe test alternatives. A process to generate a normalized graph which is useful to describe the various test alternatives is described. It is widely known that the Chi-square distribution describes the Poisson time terminated test confidence interval when in the form Lower Confidence = 2 N O Upper Confidence = 2 N O [[[[[ [[[[[ Limit 2 1-b Limit 2 1+a 2r+2' [[[ 2r' [[[ 2 2 where 2 = chi-square value found from the Chi-square tables with 2r+2 or 2r degrees of freedom.