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Analysis Options Dialog Box



The analysis options set by this dialog box are used to initialize the options used by Test Distribution window and the Skewness-Kurtosis Plot window.  Changing these options will not affect existing windows but will affect all new windows and future sessions.  The following options can be set:  

Confidence Level Combo Box:  Confidence level as a percentage to use for constructing tolerance intervals and confidence statements.  Must be a real number greater than equal to 50.0 but below 100.0.  Recommend 95.0.

Percentage in Interval Combo Box:  For tolerance intervals, percentage of values in the interval.  Must be a real number greater than 0.0 but below 100.0.  Initially set to 99.0.

Type of Tolerance Interval Radio Group:  For tolerance intervals, can select whether to display an upper, lower or two sided tolerance interval.  A fourth option is provided to use the type of tolerance interval matching the type of specifications.  A two sided tolerance is used for two sided specification and so on.  If no specs are provided, a two sided tolerance interval is displayed.

Units to Use Radio Group:  Can select whether to report estimated defect rates and confidence statements relative to the spec limits in terms of the percent in spec, percent out of spec or the reliability.

Display Tolerance Intervals Only If Distribution Fits Check Box:  The estimated defect rate, tolerance interval and confidence statement are only valid if the distribution used adequately fits the data.  Checking this box will only display them when the one of the normality tests passes when applied to the transformed values.  It is recommended this box be checked.

Normality Test to Use Radio Group:  It is recommended that the Skewness-Kurtosis All test (SK All) be used to test whether the distribution fits.  However, two alternative tests are also provided: Anderson-Darling (AD) and Shapiro-Wilks (SW).

Initial Format to Display S-K Plot Radio Group:  In Skewness-Kurtosis Plot window, select whether to initially display both the positive and negative skewness regions or just the positive skewness region.

Kurtosis Radio Group:  Specify whether to report kurtosis or excess kurtosis.

When done, click the OK button.  If any errors are found, an error message will be displayed and the errors must be corrected before the dialog box can be closed.  To set everything back to the original defaults, click the Defaults button.  You can also click the Advanced button to display and change additional advanced options.  This displays the Advanced Options dialog box.  To exit without updating the options, click the Cancel button or press the Esc key.

This dialog box is displayed by selecting the Options menu item or by clicking on the Options button on the toolbar.