Measurements were taken for the workstation that seals ball bearings; the data is: Mean 118.45 Standard...
Measurements were taken for the workstation that seals ball bearings; the data is:
| Mean | 118.45 |
| Standard Dev | 1.25 |
| Lower Spec | 117.96 |
| Upper Spec | 119.15 |
Determine the capability index. (Keep four decimal places in your answer)
Homework Answers
Answer: 0.13
Cpk (Capability Index) = min((Upper Specification - Mean)/3σ , (Mean-Lower Specification)/3σ))
=min((119.15-118.45/3*1.25) , (118.45-117.96/3*1.25)
= min(0.187, 0.13066)
By considering the minimum, capability index is 0.1307
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