Analyse-it
Analyse-it
  • Products
  • Pricing
  • Support
  • About us
Download trial Sign in
  • Tutorials
  • Process control charts tutorial

Identifying special-causes of variation

Special-causes of variation need to be identified and eliminated from the process.

  1. On the Analyse-it ribbon tab, in the Process Control group, click Labels.
    In the analysis task pane, the Control Chart panel is displayed.
  2. In the Label drop-down list, select Cause.
  3. Click Recalculate.

Points on the control chart are labelled with the reason for the special-cause variation. After discussion of the causes of problems with the team, and increased training, procedures or modifications are put in place to ensure they are eliminated.

Xbar-R control chart
Next topic: Identifying shifts (and other patterns)

  •  Tutorials
  •  Distribution tutorial
  •  Correlation / PCA tutorial
  •  Compare groups means tutorial
  •  Association in 2-way contingency tables tutorial
  •  Simple linear regression tutorial
  •  Bland-Altman method comparison tutorial
  •  Estimating the precision of a measurement procedure (CLSI EP05-A3)
  •  Evaluating the linearity of a measurement procedure (CLSI EP06-A)
  •  Verifying the precision of a measurement procedure against a performance claim and estimating the bias (CLSI EP15-A3)
  •  Pareto charts tutorial
  •  Process control charts tutorial
  •  Bringing a process under control
  •  Identifying stratification
  •  Identifying special-causes of variation
  •  Identifying shifts (and other patterns)
  •  Revising control limits
  •  Monitoring future production
  •  Process capability tutorial



Version 6.15
Published 18-Apr-2023
Products
  • Standard Edition
  • Medical Edition
  • Quality Control & Improvement Edition
  • Method Validation Edition
  • Ultimate Edition
  • Compare Editions
  • Pricing
Support
  • Documentation
  • Tutorials
  • Download latest version
  • Release history
  • Contact support
Company
  • About us
  • Blog
  • Contact us
  • Privacy policy

Get Started

  • Download free trial
  • Sign In

© 2026 Analyse-it Software, Ltd. All rights reserved.

Statistical analysis and method validation software for Microsoft Excel.

We use essential cookies to run the site, and optional analytics to improve the experience for visitors. For more information see our Privacy policy.