{"id":12047,"date":"2024-07-04T10:00:00","date_gmt":"2024-07-04T10:00:00","guid":{"rendered":"https:\/\/twproject.com\/?p=12047"},"modified":"2025-02-11T13:58:49","modified_gmt":"2025-02-11T13:58:49","slug":"deming-cycle-pdca-constant-improvement-quality","status":"publish","type":"post","link":"https:\/\/twproject.com\/blog\/deming-cycle-pdca-constant-improvement-quality\/","title":{"rendered":"The Deming Cycle (PDCA) and the constant improvement of quality"},"content":{"rendered":"\n<p>Analizing the quality and trying to improve it, is probably the main purpose behind the <strong>continuous improvement of business processes<\/strong>.<\/p>\n\n\n\n<p>This philosophy of process improvement comes from a very important person, <a href=\"https:\/\/en.wikipedia.org\/wiki\/W._Edwards_Deming\" target=\"_blank\" rel=\"noopener\"><strong>William Edwards Deming<\/strong><\/a>, a statistician, often defined as a philosopher of science.<\/p>\n\n\n\n<div class=\"table-of-content\">\n<h5>TABLE OF CONTENT<\/h5>\n<ul>\n<li><a href=\"#deming\">What is the Deming Cycle<\/a><\/li>\n<li><a href=\"#planning\">The phases of the Deming Cycle: Planning<\/a><\/li>\n<li><a href=\"#execution\">The phases of the Deming Cycle: Execution<\/a><\/li>\n<li><a href=\"#test\">The phases of the Deming Cycle: Test and Control<\/a><\/li>\n<li><a href=\"#action\">The phases of the Deming Cycle: Action<\/a><\/li>\n<li><a href=\"#pros\">The pros and cons<\/a><\/li>\n<li><a href=\"#twp\">Twproject: the software for effective Deming Cycle Management<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<p>Deming&#8217;s goal was to reapply the scientific method to <strong>business process management systems<\/strong>, which he actually did with the so-called <strong>Deming Cycle, or Plan Do Check Act (PDCA)<\/strong>.<\/p>\n\n\n\n<p>Deming&#8217;s approach is not just about improving processes, but can also be about <strong>improving an entire organization in general.<\/strong><br><a name=\"deming\"><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is the Deming Cycle<\/h2>\n\n\n\n<p>The Deming cycle (also known as <strong>Deming wheel<\/strong>) is a model of continuous quality improvement which consists of a <strong>logical sequence of four key phases:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>P &#8211; <strong>Plan<\/strong>, or planning<\/li><li>D &#8211; <strong>Do<\/strong>, or the execution<\/li><li>C &#8211; <strong>Check<\/strong>, ie the test and control<\/li><li>A &#8211; <strong>Act<\/strong>, which is the action<\/li><\/ul>\n\n\n\n<p>Deming&#8217;s experience as an engineer gave him an overview of industrial processes and the real attempt <strong>to standardize operations<\/strong> in order to ensure large-scale operation.<\/p>\n\n\n\n<p>By studying mathematical physics, he found himself in a position that allowed him to contribute to the growing science of statistics.<\/p>\n\n\n\n<p>Deming&#8217;s sampling techniques, for example, are still in use in the <strong>US Census Department<\/strong> and the <a href=\"https:\/\/www.bls.gov\/\" target=\"_blank\" rel=\"noopener\"><strong>Bureau of Labor Statistics<\/strong><\/a>.<\/p>\n\n\n\n<p>The key points on which Deming was working are:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Having a system for <strong>continuous quality improvement<\/strong><\/li><li>Reducing errors and defects through <strong>higher levels of quality uniformity<\/strong><\/li><li>Understanding the <strong>meaning of quality<\/strong> in the context of <strong>business management<\/strong><\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"840\" height=\"560\" src=\"https:\/\/twproject.com\/blog\/wp-content\/uploads\/2025\/02\/deming-cycle-pdca-twproject-840x560.png\" alt=\"The Deming Cycle and the constant improvement of quality\" class=\"wp-image-25730\" srcset=\"https:\/\/twproject.com\/blog\/wp-content\/uploads\/2025\/02\/deming-cycle-pdca-twproject-840x560.png 840w, https:\/\/twproject.com\/blog\/wp-content\/uploads\/2025\/02\/deming-cycle-pdca-twproject-400x267.png 400w, https:\/\/twproject.com\/blog\/wp-content\/uploads\/2025\/02\/deming-cycle-pdca-twproject-1536x1024.png 1536w, https:\/\/twproject.com\/blog\/wp-content\/uploads\/2025\/02\/deming-cycle-pdca-twproject-705x470.png 705w, https:\/\/twproject.com\/blog\/wp-content\/uploads\/2025\/02\/deming-cycle-pdca-twproject.png 1920w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/figure><\/div>\n\n\n\n<p>Let&#8217;s look at the four phases of the <strong>Deming Cycle<\/strong> in detail.<br><a name=\"planning\"><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The phases of the Deming Cycle: Planning<\/h2>\n\n\n\n<p>The first goal of the <strong>Deming Cycle<\/strong> is to plan ahead in order to understand what you want to achieve based on the expected results. It is a both practical and theoretical step.<\/p>\n\n\n\n<p>Here, we are dealing with <a href=\"https:\/\/twproject.com\/blog\/optimization-business-processes-business-process-management\/\" target=\"_blank\" rel=\"noopener\">business processes<\/a>, where we intend to improve something within the organization.<\/p>\n\n\n\n<p>At this stage, you will have to test and analyze what is currently wrong with the product or process and how this can be improved.<\/p>\n\n\n\n<p>Also here, one tries to understand what changes can be made to tackle the problems or to achieve something better.<br><a name=\"execution\"><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">&nbsp;The phases of the Deming Cycle: Execution<\/h2>\n\n\n\n<p>Execution begins first with a small-scale test and in a limited context.<\/p>\n\n\n\n<p>Here, the changes are implemented to test the different variables and each step will be documented.<\/p>\n\n\n\n<p>Instead of simply deciding to make a change and suddenly reviewing all the operations, it is essential to make changes slowly and iteratively during the hypothesis test.<\/p>\n\n\n\n<p>The use of studies that can be measured with respect to control groups, allows to better understand the data received, allowing not only to improve the output, but to understand exactly why the output has been improved by the changes made.<\/p>\n\n\n\n<p>For Deming, this phase should be like a model of a scientific experiment.<br><a name=\"test\"><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The phases of the Deming Cycle: Test and Control<\/h2>\n\n\n\n<p>In this phase, the results and findings are studied and collected.<\/p>\n\n\n\n<p>For Deming, the results of the planning and execution will be shown at this stage.<\/p>\n\n\n\n<p>Do the results coincide with the forecasts? In what ways do the results differ, and why?<\/p>\n\n\n\n<p>This phase of study should teach us to draw conclusions exactly like a scientist does after an experiment. Instead of simply asking the question &#8220;Did it work?&#8221;, for Deming you will have to ask <strong>&#8220;Why did it work?&#8221;.<\/strong><br><a name=\"action\"><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The phases of the Deming Cycle: Action<\/h2>\n\n\n\n<p>This phase is the final one of the process and the first phase of the next cycle.<\/p>\n\n\n\n<p>Here, the recommended changes have been implemented and the process is finalized. Now that we have learned that the output can be generated by executing action X, this action will be performed in each relevant situation.<\/p>\n\n\n\n<p>This phase can include both the implementation of improvements in the company as well as the implementation of new knowledge within the organization.<\/p>\n\n\n\n<p>Just as the results of repeated experiments create new useful knowledge, so these business results <strong>must be incorporated into new premises<\/strong> from which the cycle can be restarted.<\/p>\n\n\n\n<p>The company continues to go through the cycle until the expected and actual results coincide and no further changes are necessary.<br><a name=\"pros\"><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00a0The pros and cons<\/h2>\n\n\n\n<p>The <strong>Deming Cycle<\/strong> is a simple but powerful way to perform <strong>quality management<\/strong> and to solve new and recurring problems in any sector or process.<\/p>\n\n\n\n<p>Its iterative approach allows the project manager and his team to test solutions and evaluate results in a <strong>quality improvement cycle.<\/strong><\/p>\n\n\n\n<p>The <strong>Deming Cycle<\/strong> establishes a commitment to continuous improvement, however small, and can improve efficiency and productivity in a controlled way, without the risk of making untested large-scale changes.<\/p>\n\n\n\n<p>However, going through the Deming Cycle can be much slower and more time-consuming than a direct implementation.<\/p>\n\n\n\n<p>For this reason, it <strong>may not be the appropriate approach in the case of an urgent problem or an emergency.<\/strong><\/p>\n\n\n\n<p>Moreover, this methodology requires significant &#8220;buy-in&#8221; by team members and offers fewer opportunities for radical innovation.<\/p>\n\n\n\n<p>For Deming, the <strong>PDCA<\/strong> treats process experiments as hypothesis tests by asking the questions &#8220;did it work or didn&#8217;t it work?&#8221; And &#8220;Is the hypothesis true or is the alternative true?&#8221;<\/p>\n\n\n\n<p>This is the cycle through which an hypothesis is developed, the experiments are conducted, the results are evaluated, and the hypothesis is reviewed and repeated.<\/p>\n\n\n\n<p>In summary, its main advantages include:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Iterative approach<\/strong>: allows constant improvement without sudden and risky changes.<\/li><li><strong>Increased efficiency<\/strong>: helps reduce waste and improve productivity.<\/li><li><strong>Data-driven methodology<\/strong>: decision-making is based on concrete and measurable analyses.<\/li><\/ul>\n\n\n\n<p>Some challenges include:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Slow implementation<\/strong>: Following all phases of the cycle can take longer than other faster methodologies.<\/li><li><strong>Need for team involvement<\/strong>: To work best, it must be accepted and applied by the entire organisation.<\/li><\/ul>\n\n\n\n<p>In simple words, Deming&#8217;s approach, seems to want to remove our blinders.<\/p>\n\n\n\n<p>We need to stop looking for only minor changes to eliminate process inefficiencies and instead start thinking big about <strong>how processes can be improved in order to increase quality<\/strong>.<\/p>\n\n\n\n<p>For Deming, the same levels of scientific rigor that one would expect from the best researchers should be used in business. Let&#8217;s try then.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Twproject: the software for effective Deming Cycle Management<\/h2>\n\n\n\n<p>The effective implementation of the Deming Cycle requires adequate tools to manage projects, monitor the progress of activities and collect useful data for control and improvement.<\/p>\n\n\n\n<p>In this context, <strong><a href=\"https:\/\/twproject.com\/blog\/the-best-project-management-software\/\" target=\"_blank\" rel=\"noreferrer noopener\">Twproject <\/a><\/strong>proves to be an essential software for optimising business processes and ensuring continuous process improvement.<\/p>\n\n\n\n<p>Twproject allows you to:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong><a href=\"https:\/\/twproject.com\/blog\/project-activity-planning-best-practices\/\" target=\"_blank\" rel=\"noreferrer noopener\">Plan activities<\/a><\/strong> and assign specific responsibilities to each team.<\/li><li><strong>Execute <\/strong>projects in a structured way, with tools for collaboration and resource management.<\/li><li><strong><a href=\"https:\/\/twproject.com\/blog\/project-monitoring-evaluation-tools-and-methods\/\" target=\"_blank\" rel=\"noreferrer noopener\">Monitor and control progress<\/a><\/strong> with customised dashboards and KPIs.<\/li><li><strong>Apply corrective actions<\/strong> in real time to ensure quality and efficiency.<\/li><\/ul>\n\n\n\n<p>With <strong>Twproject<\/strong>, companies can manage the<strong> Deming Cycle <\/strong>more effectively, digitising processes and improving <strong>quality management <\/strong>with advanced project management tools.<\/p>\n\n\n\n<p><br><a name=\"twp\"><\/a><\/p>\n\n\n\n<div class=\"tw_promobox box_type3 sBlue sImage\" style=\"background-image: url('https:\/\/static.twproject.com\/blog\/wp-content\/uploads\/get-it-now-r.jpg'); background-size: 140%; background-position: -90px -210px;\">\n<div class=\"av_promobox avia-button-yes avia-builder-el-1 el_after_av_promobox avia-builder-el-last\">\n<div class=\"avia-promocontent\">\n<h2>Organize your work better with Twproject<\/h2>\n<\/div>\n<div class=\"avia-button-wrap avia-button-right \"><a class=\"avia-button avia-icon_select-no avia-color-custom avia-size-xlarge\" href=\"https:\/\/demo.twproject.com\/applications\/teamwork\/welcome\/createUserEnvironment.jsp\"><span class=\"avia_iconbox_title\">Try it for free!<\/span><\/a><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Analizing the quality and trying to improve it, is probably the main purpose behind the continuous improvement of business processes. This philosophy of process improvement comes from a very important person, William Edwards Deming, a statistician, often defined as a philosopher of science. TABLE OF CONTENT What is the Deming Cycle The phases of the &hellip; <a href=\"https:\/\/twproject.com\/blog\/deming-cycle-pdca-constant-improvement-quality\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;The Deming Cycle (PDCA) and the constant improvement of quality&#8221;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":19016,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_custom_body_class":"","_custom_post_class":"","footnotes":""},"categories":[347,58],"tags":[],"class_list":["post-12047","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pm-expert","category-project-management"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The Deming Cycle (PDCA) and the constant improvement of quality - Twproject.com<\/title>\n<meta name=\"description\" content=\"Learn how to apply the Deming Cycle to improve corporate quality, optimise processes and implement effective corrective actions!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/twproject.com\/blog\/deming-cycle-pdca-constant-improvement-quality\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Deming Cycle (PDCA) and the constant improvement of quality - 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