{"id":2210,"date":"2013-07-03T09:34:47","date_gmt":"2013-07-02T23:34:47","guid":{"rendered":"http:\/\/pdtraining.com.au\/blog\/?p=2210"},"modified":"2015-09-01T13:55:14","modified_gmt":"2015-09-01T03:55:14","slug":"lean-sigma-training-courses-variance-manufacturing-process","status":"publish","type":"post","link":"https:\/\/pdtraining.com.au\/blog\/lean-six-sigma-training\/lean-sigma-training-courses-variance-manufacturing-process\/","title":{"rendered":"What is Variance in the Manufacturing Process? – Lean Six Sigma Training Courses in Sydney, Melbourne, Perth"},"content":{"rendered":"

Variation is simply deviation from expectation. The size, trends, nature, causes, effects, and control of this variation is the centre of Six Sigma methodology.\"Supply<\/a><\/strong><\/p>\n

By attending the one-day Introduction to Lean Process Improvement Training Course<\/a> delivered by pdtraining in Sydney, Melbourne, Perth and other cities, you will learn the ways to improve processes using lean methodologies.<\/p>\n

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If you toss a coin ten times, you could expect five heads and five tails. But the reality of variation and the concept of odds actually shows us that there is a 50\/50 chance on each throw, despite what the previous toss result was or what the next toss result will be.<\/p>\n

Theoretically you could toss a coin 100 times and get 100 heads.\u00a0 So when you toss the coin ten times, and do it over and over again, the output varies for each set of tosses. The extent to which the results deviate from expectation is the extent to which variation has occurred.<\/p>\n

If you continuously measure something that occurs many times it\u2019s going to vary around an average or \u201cmean-value\u201d.<\/p>\n

Describing variability over a period of time helps us understand how the system is working and to predict how it will continue to vary in the future.<\/p>\n

Common Cause<\/h3>\n

When variation is produced by the system itself it is known as \u201ccommon cause\u201d variation. You can attempt to reduce common cause variation but you cannot eliminate it due to the nature of the system in place.<\/p>\n