Weibull++ Non-Parametric LDA Plot Example

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This example demonstrates how to use the Weibull++ non-parametric life data analysis (LDA) folio.

Assume we have the following data.


Number in State State F or S State End Time
3F9
1S9
1F11
1S12
1F13
1S13
1S15
1F17
1F21
1S22
1S24
1S26
1F28
1F30
1S32
2S35
1S39
1S41


Analyze the data set using the Kaplan-Meier method.


Solution

Enter the data in a non-parametric LDA folio. On the folio's control panel, enter a confidence level, as shown next.



The following plot shows the results, where the reliability at each failure time is calculated and plotted, along with the confidence bounds.



Because the analysis uses a non-parametric method, only the reliability at the observed failure times can be calculated. Non-parametric methods cannot be used for extrapolation and interpolation.

The following report shows the estimated reliability values and the associated confidence bounds.


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