Construct 3 Control Charts Using the Data in the Table

Multiple Choice

Construct 3 control charts using the data in the table.What conclusions can you draw about the state of control for this process?

A) X bar chart is out of control but the R-chart is in control
B) the X bar chart is out of control and the R chart is also out of control
C) the X bar chart and the R chart are both in control
D) the X bar chart is in control but the R chart is out of control