1. Special cause variations may fall within the control limits.

True ______ False______

1. A Six Sigma process must have a process capability index of 2.0 or higher.

True _____ False________

1. Control charts are used to determine root causes of the process variation.

True ______ False_____

1. A process in control may produce unacceptable output.

True ______ False______

1. Random variations fall outside the control limits.

True ______ False______

1. Run chart can be used as a measurement tool to track changes in a process over time.

True _____ False________

1. For a Normally distributed process the control limits are + - 3 times the standard deviation

True _____ False________

1. Both X bar chart and R chart must be out of control for the process to be out of control

True _____ False________

1. If you remove the control limits, a control chart is a trend chart

True _____ False________

1. The correlation between two variables can be determined by a scatter plot.

True _____ False________