ALTA ALTA Degradation Plot ptStandardResiduals: Difference between revisions

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The Reliability vs. Time plot shows the reliability values over time at the specified use stress level, capturing trends in the product’s failure behavior. The plot also shows data points from the test that are transformed from the accelerated stress level to the use stress level.  
The standardized residuals plot is useful for determining the adequacy of the life-stress model for the current data. The plot line has a mean of zero and negative values are possible. The appropriate probability transformation is plotted on the y-axis and the value of the residual is plotted on the x-axis. The plotted points (residuals) are based on the data, which are transformed using an appropriate transformation based on the selected life-stress model. If the model adequately fits the data, the points should track the plot line.
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Revision as of 00:49, 9 May 2012

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Degradation Standardized Residuals Plot

The standardized residuals plot is useful for determining the adequacy of the life-stress model for the current data. The plot line has a mean of zero and negative values are possible. The appropriate probability transformation is plotted on the y-axis and the value of the residual is plotted on the x-axis. The plotted points (residuals) are based on the data, which are transformed using an appropriate transformation based on the selected life-stress model. If the model adequately fits the data, the points should track the plot line.


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