Instruction 18-1
Below is the number of defective items from a production line over 20 consecutive morning shifts.
$$\begin{array} { | l | l | l | l |}
\hline \text { Day } & \text { Nonconf. } & \text { Day } & \text { Nonconf. } \
\hline 1 & 26 & 11 & 22 \
\hline 2 & 27 & 12 & 26 \
\hline 3 & 23 & 13 & 21 \
\hline 4 & 21 & 14 & 22 \
\hline 5 & 26 & 15 & 19 \
\hline 6 & 20 & 16 & 17 \
\hline 7 & 35 & 17 & 21 \
\hline 8 & 30 & 18 & 18 \
\hline 9 & 21 & 19 & 16 \
\hline 10 & 25 & 20 & 17\
\hline
\end{array}$$ Note: Nonconf. = Nonconformances
-Referring to Instruction 18-1,based on the c chart,it appears that the process is out of control.

Question

Instruction 18-1
Below is the number of defective items from a production line over 20 consecutive morning shifts.
 $$\begin{array} { | l | l | l | l |} 
\hline \text { Day } & \text { Nonconf. } & \text { Day } & \text { Nonconf. } \
\hline 1 & 26 & 11 & 22 \
\hline 2 & 27 & 12 & 26 \
\hline 3 & 23 & 13 & 21 \
\hline 4 & 21 & 14 & 22 \
\hline 5 & 26 & 15 & 19 \
\hline 6 & 20 & 16 & 17 \
\hline 7 & 35 & 17 & 21 \
\hline 8 & 30 & 18 & 18 \
\hline 9 & 21 & 19 & 16 \
\hline 10 & 25 & 20 & 17\
\hline
\end{array}$$ Note: Nonconf. = Nonconformances
-Referring to Instruction 18-1,based on the c chart,it appears that the process is out of control.

Quizplus · Accepted Answer

The c chart is used to monitor the count of nonconformities per unit. If the number of nonconformities varies significantly from shift to shift, it indicates that the process is out of control. In this case, the chart shows a wide variation in the number of defects, suggesting that the process is not stable and needs to be investigated. Therefore, the answer is A, true.

Instruction 18-1 Below Is the Number of Defective Items from a Production

Instruction 18-1
Below Is the Number of Defective Items from a Production