User's Manual Part 2

MEGAM.O.L.E.® Help System Guide ♦194♦
5.4.5.2. X-Bar Chart
The X-Bar Chart is the graphical chart produced from samples of a flagged parameter
on the Spreadsheet Page Tab. The chart uses a rolling average of 2 through 6 sample
points. The user can specify the sample points on the SPC Page Tab of the
Preferences dialog box. The X-bar is the average of the data samples and the UCL and
LCL are calculated using a formula based on the Range data.
The calculation numbers vary depending on the data in the Spreadsheet Page
Tab. Using the filter function or the hide command allows the user to select the
specific data runs to include on the SPC chart.