{"id":42593,"date":"2014-03-16T12:25:23","date_gmt":"2014-03-16T06:55:23","guid":{"rendered":"http:\/\/vskills.in\/certification\/tutorial\/?p=42593"},"modified":"2024-04-12T14:19:44","modified_gmt":"2024-04-12T08:49:44","slug":"indices-2","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/indices-2\/","title":{"rendered":"Process Capability Indices"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a ref=\"magnificPopup\" href=\"https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2020\/12\/Cisco-Business-Architecture-Specialist-820-445-DTBAS-9-1-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"400\" src=\"https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2020\/12\/Cisco-Business-Architecture-Specialist-820-445-DTBAS-9-1-1.png\" alt=\"Process Capability Indices\" class=\"wp-image-93635\" srcset=\"https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2020\/12\/Cisco-Business-Architecture-Specialist-820-445-DTBAS-9-1-1.png 750w, https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2020\/12\/Cisco-Business-Architecture-Specialist-820-445-DTBAS-9-1-1-300x160.png 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/a><\/figure><\/div>\n\n\n<p>\u00a0<\/p>\n<p><strong>Process Capability Indices<\/strong>&#8211; In\u00a0process improvement\u00a0efforts, the\u00a0process capability index\u00a0(process capability ratio &#8211; PCR)\u00a0is a statistical measure of\u00a0process capability. It is\u00a0the ability of a\u00a0process\u00a0to produce output within\u00a0specification\u00a0limits.<\/p>\n<p>The concept only holds meaning for processes that are in a state of\u00a0statistical control. Process capability indices measure how much\u00a0&#8220;natural variation&#8221;\u00a0a process experiences relative to its specification limits and allows different processes to be compared with respect to how well an organization controls them.<\/p>\n<p>If the upper and lower\u00a0specification\u00a0limits of the process are USL and LSL:<\/p>\n<ul>\n<li><span style=\"line-height: 1.714285714; font-size: 1rem;\">the target process mean is T,<\/span><\/li>\n<li><span style=\"line-height: 1.714285714; font-size: 1rem;\">the estimated mean of the process is\u00a0<\/span><img decoding=\"async\" style=\"line-height: 1.714285714; font-size: 1rem;\" src=\"http:\/\/upload.wikimedia.org\/math\/4\/8\/1\/481c36f223dc0f06b5075a736f9410fc.png\" alt=\"\\hat{\\mu}\" \/><span style=\"line-height: 1.714285714; font-size: 1rem;\">\u00a0and <\/span><\/li>\n<li><span style=\"line-height: 1.714285714; font-size: 1rem;\">the estimated variability of the process (expressed as a\u00a0<\/span><span style=\"line-height: 1.714285714; font-size: 1rem;\">standard deviation<\/span><span style=\"line-height: 1.714285714; font-size: 1rem;\">) is\u00a0<\/span><img decoding=\"async\" style=\"line-height: 1.714285714; font-size: 1rem;\" src=\"http:\/\/upload.wikimedia.org\/math\/a\/9\/8\/a98791f05c03da82c1b05f361069b353.png\" alt=\"\\hat{\\sigma}\" \/><span style=\"line-height: 1.714285714; font-size: 1rem;\">, <\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 1rem; line-height: 1.714285714;\">then commonly accepted process capability indices include:<\/span><\/p>\n<p><a ref=\"magnificPopup\" href=\"http:\/\/vskills.in\/certification\/tutorial\/wp-content\/uploads\/2014\/03\/index.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-42594\" src=\"http:\/\/vskills.in\/certification\/tutorial\/wp-content\/uploads\/2014\/03\/index.png\" alt=\"index\" width=\"1126\" height=\"384\" srcset=\"https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2014\/03\/index.png 1126w, https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2014\/03\/index-300x102.png 300w, https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2014\/03\/index-1024x349.png 1024w, https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2014\/03\/index-624x212.png 624w\" sizes=\"auto, (max-width: 1126px) 100vw, 1126px\" \/><\/a><\/p>\n<div class=\"apply\">\n<h5 class=\"vskills3\"><strong><span lang=\"X-NONE\">Short-term and long-term capability<\/span><\/strong><\/h5>\n<p class=\"VSKILLbodytext\"><span lang=\"EN-US\">Short-term capability is measured over a very short time period since it focuses on the machine&#8217;s ability based on design and quality of construction. By focusing on one machine with one operator during one shift, it limits the influence of other outside long-term factors, including operator, environmental conditions such as temperature and humidity, machine wear and different material lots.<\/span><\/p>\n<p class=\"VSKILLbodytext\"><span lang=\"EN-US\">Thus, short-term capability can measure the machine&#8217;s ability to produce parts with a specific variability based on the customer&#8217;s requirements. Short-term capability uses a limited amount of data relative to a short time and the number of pieces produced to remove the effects of long-term components. If the machines are not capable of meeting the customer&#8217;s requirements, changes may have a limited impact on the machine&#8217;s ability to produce acceptable parts. Remember, though, that short-term capability only provides a snapshot of the situation. Since short-term data does not contain any special cause variation (such as that found in long-term data), the short-term capability is typically rated higher.<\/span><\/p>\n<p class=\"VSKILLbodytext\"><span lang=\"EN-US\">When a process capability is determined using one operator on one shift, with one piece of equipment, the process variation is relatively small. Control limits based on a short-term process evaluation are closer together than control limits based on the long-term process. <\/span><\/p>\n<p>Test Your Six Sigma Black Belt Skills By Taking Our Practice Tests on This <a href=\"http:\/\/www.vskills.in\/practice\/quiz\/Six-Sigma-Black-Belt\">Link<\/a><\/p>\n<h5>Apply for Six Sigma Black Belt Certification Now!!<\/h5>\n<p><a href=\"http:\/\/www.vskills.in\/certification\/Certified-Six-Sigma-Black-Belt-Professional\">http:\/\/www.vskills.in\/certification\/Certified-Six-Sigma-Black-Belt-Professional<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/www.vskills.in\/practice\/six-sigma-black-belt\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"961\" height=\"150\" src=\"https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2020\/12\/1Z0-1050-20-Oracle-Payroll-Cloud-2020-Implementation-Essentials-1.png\" alt=\"\" class=\"wp-image-93217\" srcset=\"https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2020\/12\/1Z0-1050-20-Oracle-Payroll-Cloud-2020-Implementation-Essentials-1.png 961w, https:\/\/www.vskills.in\/certification\/tutorial\/wp-content\/uploads\/2020\/12\/1Z0-1050-20-Oracle-Payroll-Cloud-2020-Implementation-Essentials-1-300x47.png 300w\" sizes=\"auto, (max-width: 961px) 100vw, 961px\" \/><\/a><\/figure><\/div>\n\n\n\n<p><a href=\"https:\/\/www.vskills.in\/certification\/tutorial\/six-sigma-black-belt-certification\/\" target=\"_blank\" rel=\"noreferrer noopener\">Go back to Tutorial<\/a>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href=\"https:\/\/www.vskills.in\/certification\/Certified-Six-Sigma-Black-Belt-Professional\" target=\"_blank\" rel=\"noreferrer noopener\">Go to Home Page<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 Process Capability Indices&#8211; In\u00a0process improvement\u00a0efforts, the\u00a0process capability index\u00a0(process capability ratio &#8211; PCR)\u00a0is a statistical measure of\u00a0process capability. It is\u00a0the ability of a\u00a0process\u00a0to produce output within\u00a0specification\u00a0limits. The concept only holds meaning for processes that are in a state of\u00a0statistical control. Process capability indices measure how much\u00a0&#8220;natural variation&#8221;\u00a0a process experiences relative to its specification limits and&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[3897,6280],"tags":[9750,9747,9749,9751,9748,6908,6848,6871],"class_list":["post-42593","page","type-page","status-publish","hentry","category-quality","category-six-sigma-black-belt-quality","tag-certified-six-sigma-black-belt-professional-course-outline","tag-certified-six-sigma-black-belt-professional-exam-details","tag-certified-six-sigma-black-belt-professional-free-practice-test","tag-certified-six-sigma-black-belt-professional-online-tutorial","tag-certified-six-sigma-black-belt-professional-preparatory-guide","tag-indices","tag-quality","tag-tutorials"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Six Sigma Black Belt Tutorial | Process Capability Indices<\/title>\n<meta name=\"description\" content=\"In process improvement efforts, the process capability index (process capability ratio - PCR) is a statistical measure of process capability. 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