Six sigma math formulas series#
Defining Project task is typically complex and accomplished by a series of decomposition followed by a series of aggregations it is also called top down approach and can be used in the Define phase of Six Sigma framework. It is a process for defining the final and intermediate products of a project and their relationship.
Project charters the charter documents the why, how, who and when of a project include the following elements Define the Process (top-level) and its stake holders.
The objectives within the Define Phase which is first phase in DMAIC framework of Six Sigma are:. We will discuss each phase in brief and the various methods used in Six Sigma. . Six Sigma is implemented in five phases which are Define, Measure, Analyze, Improve, Control. The father of Six Sigma is Bill Smith who coined the term Six Sigma and implemented it in Motorola in the 1980’s. Six Sigma is Denoted by the Greek alphabet σ which is shown in the table above and is called as Standard deviation. One more example would say a company manufactures pistons used in motor cycles the customer demand is that the piston should not a diameter more than 9 cm and less than 5 cm anything manufactured outside this limits is said to be a variation and the six sigma consultant should confirm that the pistons are manufactured within the said limits else if there is variation in the range then the company is not operating at 6 sigma level it is operating at a very low level.Ī company is operating at six sigma level implies that there are only 3.4 defects per million opportunities for example an airline company operating at six sigma level means that it loses only 3.4 baggage’s per million of the passenger it handles.īelow is Shown the Six Sigma Table and a graph explaining the meaning of various levels of Six Sigma. For example, if you want to find the average height of male population in India, you cannot bring the entire population of more than 2 billion into one room and measure their height for a scenario like this we take samples that is we pick up a sample (people) from each state and use statistical formulas to draw the inference about the average height of male population in a population which is more than 2 billion. Six Sigma is basically the application of Statistical formulas and Methods to eliminate defects, variation in a product or a process.
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