Median Control Chart Template

QI Macros default control chart template uses the average of your data to calculate the center line on your control chart. The 1 and 2 sigma lines and the upper and lower control limits are derived from this average.

QI Macros X chart templates also contain a median control chart option. This worksheet uses the median of your data to calculate the center line and control limits. The median is defined as the middle number in your data set after it has been sorted in numerical order.

To use the median control chart template:

  1. Click on the QI Macros menu, Control Chart templates, then select one of the templates (i.e. XmR Five Pack):

    control chart templates in excel
  2. Click on the worksheet labeled Median (e.g. XmR Median R):

    control chart template options
  3. Data input areas are shaded in yellow. As you input data, the charts populate to the right:

    control chart template in excel
  4. X chart templates have input areas to define spec limits for the histogram:

    x Chart spec limits input for histogram
Learn More About QI Macros Control Chart Template Options...

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