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The applets in this section allow you to see how the common Xbar control chart is constructed with known variance. The Xbar chart is constructed by collecting a sample of size n at different times t. The process is considered to be out of control if the sample mean of the current sample falls above or below the control limits. The user has the options to change each parameter individually and all at once. This page was formerly located at
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Date Of Record Creation 2005-04-07 17:57:00
Date Last Modified 2009-10-27 14:07:00
Date Of Record Release 2004-07-27 21:47:00
Email Address
Date Issued 2000
Resource Type
Typical Learning Time Various
Author Name S. Dorai-Raj, C. Anderson-Cook, T. Robinson
Author Organization Virginia Tech Department of Statistics
Technical Requirements Java-capable browser
Source Code Available On
Material Type
Statistical Topic
Intended User Role
Math Level

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