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| | #REDIRECT [[Template:WebNotes/Weibull%2B%2BStandard_Folio_Data_3P-Weibull]] |
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| | align="center" valign="middle" | {{Font|Life Data Analysis|10|tahoma|bold|gray}}
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| The Weibull distribution is one of the most widely used lifetime distributions in reliability engineering. It can model an increasing, decreasing and or constant failure rate behavior. The 3-parameter Weibull includes a location parameter gamma. It's pdf is given by:
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| <br><math> f(T)={ \frac{\beta }{\eta }}\left( {\frac{T-\gamma}{\eta }}\right) ^{\beta -1}e^{-\left( { \frac{T-gamma}{\eta }}\right) ^{\beta }} \,\!</math>
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| <br>Beta is the shape parameter or slope. Values less than one incicate a decreasing failure rate, greater then one an increasing failure rate, and when one a constant failure rate. Eta is the scale parameter, or characteristic life. Eta represents the time by which 63.2% of the units fail.<br>
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| <br><math> \beta= </math> shape parameter (or slope).
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| | align="center" valign="middle" | [http://www.reliawiki.com/index.php/The_Weibull_Distribution Get More Details...]
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| | align="center" valign="middle" | [http://www.reliawiki.com/index.php/Weibull_Examples_2P See Examples...]
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