A manufacturer of lathe machine states that its machine has the ability to produce components having accuracy as 3σ. What do you understand by this statement?
3σ basically refers to the parts that is going to be produced, having defects 66.8k per million. As the manufacturer has specified that product have an accuracy of 3σ, which means out of produced 99.83% of products lies within specified tolerance zone.(or 0.27% defective)
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