Thank You

Thank you for submitting the "Analyze data" for section on time-between control charts.  I have received your responses and here are the correct responses to selected questions.  

Presentation

Corrections are needed if any of the following is present:

1. The chart includes un-named labels such as "Series 1" and "Series 2."
2. The markers in the control line were not removed.
3. The chart does not have a title
4. The X-axis does not have a title
5. The Y-axis does not have a title
6. The chart is not easy to find.
7. Colors used in the chart and in the cell values, do not help in understanding of the work.
8. Except for the data, all cell values should be calculated as a formula.  If this is not the case, it is very important that you point this out.  You should be able to change a data value and all calculations should change automatically.

Accuracy

The control chart should look like this:

This chart shows that the patient is not exercising as much as he/she used to do.  This chart was constructed from the following data points:

In commenting in this area make sure that:

• The calculated R is correct. 
• The duration of no-exercise was plotted and not the duration of exercise. 

Suggestions for Improvements

I hope this has been helpful.   Please let me know if there are any errors in my feedback to you.