Which of the following is true of a control-chart analysis?
A) It cannot be used to detect randomness in operating results.
B) Its control boundaries are set using historical data.
C) It can only be used to establish average and upper limits of the measure.
D) It can only be used to establish average and lower limits of the measure.

Question

Quizplus · Accepted Answer

Control-chart analysis involves setting control boundaries based on historical data to detect if the current process is within acceptable limits or if there are any unusual patterns. Therefore, option B is the correct choice. Option A is incorrect as control-chart analysis is specifically used to detect patterns of non-randomness in operating results. Option C and D are incorrect as control charts are used to establish both upper and lower control limits based on historical data.

Which of the Following Is True of a Control-Chart Analysis