The video of my talk for BrowserStack about "How process behaviour charts empower testers" is now available here: https://www.browserstack.com/webinars/test-reporting-analytics

After my talk Gopal Rao Kallepu, Senior PM BrowserStack, wrote Thank you for the insightful session Mike Harris CITP FBCS! It was a pleasure hosting and speaking alongside you. The discussion really deepened my understanding of process behaviour charts and their impact on test data analysis.

I’m excited to bring some of these learnings into our product and continue improving it for our users. Looking forward to more such collaborations!

#Shewhart #Deming #SoftwareTesting

BrowserStack Day Webinar – Test Reporting and Analytics Webinar – June 2025 | BrowserStack

BrowserStack

I am excited to be giving a webinar for BrowserStack about "How Process Behaviour Charts Empower Testers" on the 26th June 2pm UK time.

Process Behaviour Charts show failures as being caused by the system, not the individual. The charts provide valuable insights into our test results, which can be used to enhance quality.

I'd like to thank Gopal Rao Kallepu and Abhinav Chaurasia for their help in preparing the webinar.

#Shewhart #SoftwareTesting

https://www.browserstack.com/webinars/test-reporting-analytics?utm_source=linkedin&utm_medium=organicsocial&utm_platform=&utm_content=physicalevent&utm_campaign=WBN-Test-Reporting-and-Analytics-June-25&utm_campaigncode=701OW00000NvTpiYAF&utm_term=social_linkedin

BrowserStack Day Webinar – Test Reporting and Analytics Webinar – June 2025 | BrowserStack

BrowserStack

Data from performance and load tests can be difficult to interpret. Process behaviour charts cut out noise and enable you to analyse your data by listening to the voice of the process.

This talk provides examples and will give you the resources to create process behaviour charts for your test data. These charts were the first tool to show that faults are due to the system of the individual and so are the beginning of quality assurance and quality engineering.

Without the creation of process behaviour charts, the @mot would not exist!

This talk will show you how to use Process behaviour charts, and so:

Enable you to see the causes of failures as being the system, not the individual
Give you insights into your data by listening to the voice of the process
Provides resources to create your own process behaviour charts

#Shewhart #ProcessBehaviourCharts

https://www.ministryoftesting.com/talks/enhance-your-performance-tests-and-more-with-process-behaviour-charts?s_id=19009485

Enhance your performance tests and more with process behaviour charts

Data from performance and load tests can be difficult to interpret

Ministry of Testing

Blogged: “The Purpose of Analysis is Insight”

I learn something whenever I write a blog post. I learned more when writing this blog post than I do normally.

Thank you Rob Park for prompting me to explore and write this.

#SoftwareTesting #Testing #Shewhart #SPC

https://testandanalysis.home.blog/2024/10/07/the-purpose-of-analysis-is-insight/

“The Purpose of Analysis is Insight”

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…

TestAndAnalysis

A new feature has been recently merged into the dev branch: Process Behavior Charts (Control Charts of #Shewhart Charts) - XmR, XbarR, XbarS 📈 🚀

@[email protected]

Process behavior charts are a statistical process control tool used to determine if a process is in a state of control.

➡️ https://en.wikipedia.org/wiki/Control_chart

#LabPlot #DataAnalysis #DataVisualization #Science #Statistics #Quality #SPC #ControlChart #FLOSS #FOSS #OpenSource #Business #FreeSoftware #Researchers #XmR #Deming #Lean #SixSigma #Wheeler

Control chart - Wikipedia

Blogged: Whoever you are, whatever you have achieved you should recognise the achievements of others

Thank you to Rob Park for helping me organise my thoughts.

#Quality #Shewhart #Deming #Juran

https://testandanalysis.home.blog/2024/07/16/whoever-you-are-whatever-you-have-achieved-you-should-recognise-the-achievements-of-others/

Whoever you are, whatever you have achieved you should recognise the achievements of others

Dr Joseph Juran rose from poverty to be an internationally respected management consultant who specialised in quality. His work included popularising the use of the Pareto Principle and creating&nb…

TestAndAnalysis

Today is an important centenary for those of us who work in ‘quality’. I have written a blog about the breakthrough from 100 years ago and how it can help you now: Gain insights by using control charts to analyse your performance test results
#SoftwareTesting #ControlCharts #Shewhart #PerformanceTesting

https://testandanalysis.home.blog/2024/05/16/gain-insights-by-using-control-charts-to-analyse-your-performance-test-results/

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&#821…

TestAndAnalysis
A review of “Understanding Variation The Key to Managing Chaos” by Donald J. Wheeler

This book is both insightful and useful. It was recommended to me by members of the Deming Profound Book Club. Wheeler describes how to create control charts and analyse processes using control cha…

TestAndAnalysis

8) According do W.E. Deming, either mistake causes loss. We can avoid either mistake, but not both. The best that we can do is to make Mistake 1 now and then, and Mistake 2 now and then, both preferably rarely, following rules that will over the long run minimize the net economic loss from both mistakes.

VARIATION = COMMON CAUSE + SPECIAL CAUSE

#Shewhart #Deming #Mistake

7) Dr. Shewhart saw two kinds of variation—variation from common causes (stay the same day to day, lot to lot) and variation from special causes (not part of the system of common causes).

He also saw the two kinds of mistakes:

Mistake 1. To react to an outcome as if it came from a special cause, when actually it came from common causes of variation.
Mistake 2. To treat an outcome as if it came from common causes of variation, when actually it came from a special cause.

#Shewhart #Deming