Understanding Graph and Display Preferences

Graph and display preferences determine the statistical and visual content of quality charts and graphs when viewed from using the (optional) Quality application client. You use graph and display preferences to:

  • Define the presentation and statistical content of Quality charts and graphs to meet particular business needs.

  • Enunciate details by overlaying related information such as specification limits, summary statistics, or control chart alarms.

  • Simplify the interpretation of data when viewed by operators or quality personnel.

Quality provides four predefined graph preferences that contain standard default options and settings for the available graph types. Use the Graph and Display Preferences component to add new preferences or change the settings of existing preferences to suit data analysis requirements. The following tables illustrate the predefined graph and display preferences.

Graph Preferences ID: 1 - Variable Data Entry Default

Option

Setting

Default Working Graph.

Control Chart.

Default Pareto Chart Item.

Control Test Violations.

Pareto Cell Display Limit.

25.

Bar Graph Display Limit.

10.

Display Control Chart Alarms.

Yes.

Indicate Specs on Histogram.

Yes.

Statistics List.

OBSRV.MEAN.MINIMUM.MAXIMUM.STDDEV. CP.CPK.CPL.CPU.PCLOWER.PCUPPER. PCTOTAL.LSL.USL.

Graph Preferences ID: 2 - Attribute Data Entry Default

Option

Setting

Default Working Graph.

Control Chart.

Default Pareto Chart Item.

Defects.

Pareto Cell Display Limit.

10.

Bar Graph Display Limit.

10.

Display Control Chart Alarms.

Yes.

Indicate Specs on Histogram.

No.

Statistics List.

OBSRV.MEAN.MINIMUM.MAXIMUM.SUMDEF. DEFPH.DEFPT.DEFPM.DEFPU.

Graph Preferences ID: 3 - Analysis Default

Option

Setting

Default Working Graph.

Control Chart.

Default Pareto Chart Item.

Control Test Violations.

Pareto Cell Display Limit.

25.

Bar Graph Display Limit.

25.

Display Control Chart Alarms.

Yes.

Indicate Specs on Histogram.

Yes.

Statistics List.

OBSRV.MEAN.MINIMUM.MAXIMUM.STDDEV.CP. CPK.CPL.CPU.PCSPEC.PCLOWER.PCUPPER. PCTOTAL.LSL.USL.

Graph Preferences ID: 4 - Advanced Analysis Default

Option

Setting

Default Working Graph.

Control Chart.

Default Pareto Chart Item.

Control Test Violations.

Pareto Cell Display Limit.

25.

Bar Graph Display Limit.

25.

Display Control Chart Alarms.

Yes.

Indicate Specs on Histogram.

Yes.

Statistics List.

OBSRV.MEAN.MINIMUM.MAXIMUM.STDDEV. RANGE.VARIANCE.STDERR.COEFVAR. SKEWNESS. KURTOSIS.ZLOWER.ZUPPER.LOWER3S.UPPER3S. DISTYPE.Q1.MEDIAN. Q3.AVEMEANS.AVEVARS. CP.CPK.CPL. CPU.PCSPEC.PCLOWER.PCUPPER. PCTOTAL. LSL.USL.