Control Chart XmR

Nova Silva BV

The most effective way to detect signals of change in your KPI is to use a Control Chart (XmR chart)

The Control Chart helps you to determine if your processes are in control. When your measurements meet certain criteria (see below), an indicator immediately tells you something is going on. This helps you to determine the source of this variation.

The Control Chart XmR consists of two charts: The upper chart (X-Chart) displays the data points over time together with a calculated average. The calculated average is then used to calculate the Upper and Lower Control Limits (UCL and LCL). The lower chart displays the Moving Range (mR-Chart) with its Average and Upper Control Limit. The mR-Chart can be hidden.

The rule set for the detection of signals is customisable. By default it is:

A point is outside the control limits

7 points in a row are above or below the center line

10 out of 12 points are above or below the center line

3 out of 4 points are closer to the UCL or LCL than the center line

You can add your own target line, to see how your process is doing compared to a certain goal. If you have determined the center line and control limits separately, you can easily add these to the visual as well.

Key features of the Control Chart XmR are:

Switch between standard and trending XmR: processes with natural trends (continuously increasing or decreasing) can be analysed with the Trending XmR function.

Highlight signals: Detected signals can be indicated below the chart, and the measurements themselves can be coloured in a separate colour.

Work on various time scales: choose the appropriate time scale for optimal analysis, ranging from seconds to years;

Format the objects: All lines, markers and axes can be formatted independently, and support theme settings;

Selection & Highlighting: Like in standard Power BI Charts you can make use of the Selection & Highlighting functions within the Control Chart XmR;

Context menu: Like in standard Power BI Charts you have access to the context menu to include and exclude data points;

Full tooltip support: Besides the default Tooltip behaviour (show the value of the element you hover) you can also add additional fields to the tooltip.

Full Bookmark support: like any of the standard visuals the Control Chart XmR supports Bookmarks.

This visual offers in-app purchases and comes with free access to evaluate the paid features.

All functionality of the Control Chart XmR is available for free within Power BI Desktop. The licensed version is needed for sharing the reports with your colleagues in Power BI Service. Need more information? Visit our site at:

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