A Company Believes a Process Monitored by an X-Bar Chart

Multiple Choice

A company believes a process monitored by an x-bar chart to be in control.When the most recent control point exceeded the UCL value by 20%, the company should

A) believe that a random bad luck chance occurred and proceed.
B) suspect that an assignable cause of variation now exists and can be found.
C) ignore the control point completely, as it is simply an outlier.
D) wait for the next four samples to be taken to see if a trend develops.