Control Chart

Use Control Charts to monitor performance and generate an alert if the data is outside of the control limits.

What is a Control Chart?

A Control Chart is a graph used to study how a process changes over time.

  • Data is plotted chronologically (in order of time).
  • There is always a central line for the average, an upper line for the upper control limit, and a lower line for the lower control limit.
    • These lines are determined from historical data.
  • By comparing current data to these lines, you can draw conclusions about whether the process variation is consistent (in control) or is unpredictable (out of control, affected by special causes of variation).

Create a Control Chart

How do I build a Control Chart?

First, create the chart as you normally would. Then, navigate to the Chart and:

  • Click  in the top right corner of the page.

  • In the resulting drop-down menu, click 

 

In the resulting window, add data to your Chart as necessary, then click .




The control limits settings are at the bottom of the resulting window. You can:

  • Enter the lower, average, and/or upper limits in the corresponding fields and pick a color for each.
  • Check the box next to “Generate Flag” to have an alert generated to all members of the chart’s team if the data that is entered is out of control, i.e. when a data point surpasses the upper or lower limit.
  • Check the box next to “Red Markers” to make data point markers red if the point is out of control. Note that markers must also be enabled on the data series configuration.
  • Select the Save button.

 

What happens when the data is outside of control limits?

  • If “Generate Flag” is enabled, every member of the Chart’s Team will get an alert that the data is outside control limits.
  • A red exclamation point is displayed next to the Chart’s name on any List of Charts.

Edit a Control Chart