The team analyzed the amount of defects as a fraction of the number of opportuni

Question

The team analyzed the amount of defects as a fraction of the number of opportunities in the context of this project. A defect is defined as a student who obtains a grade of D or lower on his/her corresponding AP class. During pre-open access, number of grades obtained was 225, and there were 12 “D” or “F” grades. After open access, the number of grades obtained was 989, and there were 106 “D” or “F” grades. Calculate the yield and the corresponding sigma level for both time periods. Comment on your findings.

Explanation / Answer

The process yield is calculated by subtracting the total number of defects from the total number of opportunities, dividing by the total number of opportunities, and finally multiplying the result by 100.

= (225-12)/225 *100% = 94.66666%

sigma level = 3.11

b)yield = (989-106)/989 *100% = 89.2821%

sigma level = 2.74

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