Documentation

Modifications of user preferences cannot be applied on an on-going study that is, after the data import.

To apply new settings on a study, go back to data import view, modify and save user preferences.

User settings

• Cnpk formula: Cnpk are calculated from percentiles based on the smooth curve (SMOOTH) or on data (FRACTILE).
• Cp confidence interval: Confidence level for the Cp/Cpk confidence interval.
• Normality alpha level: alpha risk level for the normality test.
• Force normality: If YES, all results which depend on the normality test conclusion are performed assuming a normal distribution.
• OOS unit: Observed/Expected Out Of Specifications (OOS) are in percentage (PCT) or in part per million (PPM)
• Show Control Limits: If YES, Control Limits are displayed on the Individual Control Chart otherwise they are not displayed.
• Precision: Precision of the format to display nicely results
• Cp decimal places: Number of decimal places to round capability indices
• Capability thresholds: thresholds for capability conclusion on C(n)pk in the report. Thresholds are rounded with the number of decimal places defined in
• Cp decimal places

Modify settings

Before starting a study, user preferences may be modified.

1. Click on your name in the upper right corner of the browser window.
2. Click on
3. Check the box to activate the settings modification and modify values.
4. Click on

Tip: You do not have idea on settings or a procedure that offers them, keep default settings.

Apply default settings

1. Click on your name in the upper right corner of the browser window.
2. Click on
3. Click on Reset defaults to apply default settings.
4. Click on

Note: The default preferences are the following:

• Cnpk formula: SMOOTH
• Cp confidence interval: 95
• Normality alpha level: 0.01
• Force normality: NO
• OOS unit: PCT
• Show Control Limits: NO
• Precision: 4
• Cp decimal places: 2
• Cp conclusion threshold
  • Not capable: 1.33
  • Accepetable: 1.50
  • Good: 2.00