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An electronics firm was experiencing high rejections in their multiple connector manufacturing departments. "p" charts were introduced as part of a program to reduce defectives. Control limits were based on prior history, using the formula:
P' is the historical value of percent defective and n is the number of pieces inspected each week. After six weeks, the following record was accumulated
1,000 pieces were inspected each week in each department. Which department(s) exhibited a point or points out of control during this period (round off calculations to nearest tenth of a percentage point)?
Suggested Answer: D
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7 comments · newest first
OL
Oliva
11 months ago
I’m surprised all departments are flagged! What happened?
LE
Lennie
12 months ago
All departments had issues, but 104 really stood out.
ST
Stephaine
12 months ago
Wait, are we sure about 106? I thought they were improving.
MA
Maryln
12 months ago
Totally agree, 105 was also out of control.
LA
Lashon
1 year ago
Department 104 had the highest defect rate.
AN
Anglea
1 year ago
Ah, I see what's going on here. Based on the information provided, I believe I know the correct answer. Let me just confirm my reasoning.
FE
Fernanda
1 year ago
This seems like a straightforward question. I'll carefully read through the options and think it through logically.