Testers want to analyse the product and process to improve quality. Once every engineering team had a statistician, that is not the case today. Testers can help their team by using statistics, such as control charts, to do analysis. There are a lot of resources to help us use statistics, for example, this blog post …
Category Archives: Control Charts
Gain insights by using control charts to analyse your performance test results
On Friday 16 May 1924 Walter Shewhart gave his manager at Bell Telephone Laboratories a memo. The memo “suggested a way of using statistics to improve quality in telephones.[1]” Shewhart’s memo proposed using Statistical Process Control, including Control Charts for visualisation, to improve quality. Shewhart sparked “a revolution in quality control”[2] that can help us …
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A chart for measuring the quality of “spinning plates”
Quality metrics can be like measuring the wobble on spinning plates. The engineering teams are merging to the main branch, code is being deployed and you need metrics to show if there are issues with this process that require your attention. The teams working are rather like spinning plates. The teams are working and management …
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