The probability of parts produced going outside the control limit is much higher in ± 3σ limits system than in ± 6σ limits system.

The probability of parts produced going outside the control limit is much higher in ± 3σ limits system than in ± 6σ limits system. Correct Answer True

‘Six Sigma’ is nothing but an extension of limits in a control chart i.e., from ± 3σ limits system to ± 6σ limits system. ± 3σ limits system has 2700 defects per million of opportunities and ± 6σ limits system has only 3.4 defects per million of opportunities. This implies that the ± 3σ limits system has higher defects than in ± 6σ limits system.
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