After Collecting a New Sample and Determining Its Average, Which

Multiple Choice

After collecting a new sample and determining its average, which of the following should NOT be done?

A) Recalculate the control chart with the new information.
B) Plot the sample average into the existing control chart.
C) Check whether the new sample gives reason to believe that the process is not in control.
D) If the sample average is above the upper control limit, the process should be investigated.