Inverse Power Law Example

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This example appears in the Accelerated Life Testing Data Analysis Reference book.

Consider the following times-to-failure data at two different stress levels.

Pdf of the lognormal distribution with different log-std values.

The data set was analyzed jointly in an ALTA standard folio using the IPL-Weibull model, with a complete MLE solution over the entire data set. The analysis yields:

\widehat{\beta }=2.616464\,\!
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