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Chapter 5: Basic Six Sigma Concepts - Coggle Diagram
Chapter 5: Basic Six Sigma Concepts
Standard Deviation
Calculating Standard Deviation for Population Data
Formula is listed on page 45
Standard Deviation in Excel
enter =STDEV()
The Pareto Principle
The Pareto principle, also called the 80/20 rule, says that 20 percent of the causes lead to 80 percent of
the effects.
Pareto charts are helpful analytical tools when you need to analyze frequencies or causes of problems.
Voice of the Customer
Surveys via telephone, mail, email, or online
Focus groups in person or online
Interviews
Beta or user testing
Feedback forms
Customer complaints
Social media or site interaction
Reviews
Forums
Basic Metrics
There are many formulas such as Defects per Million Opportunities, Defects per Unit, First Time Yield (FTY), Rolled Throughput Yield (RTY),