Monitoring quality improvement on a PC

A system has been developed for use on a personal computer (PC) that uses modern statistical methods to monitor the quality of installations of telecommunications products. The monitoring of the quality of an installation is referred to as an installation audit. The modern statistical methods used include the following sampling, rating, and reporting methods. (it A sampling or resource allocation approach, that is not only cost-effective but incorporates recent quality history very precisely to effect an appropriate increase or decrease in sampling intensity, selects installation jobs and determines the proportion of each job chosen to audit. (ii) Quality rating methods optimally combine current quality data with recent past data to make a better statistical evaluation of the current quality of installations for each type of product for the current rating period. (iii) Graphical methods for displaying the quality rating results provide interval estimates of current quality and a trend line on the long run average of quality for installations of each product. Other summary reports are also provided.