Template:Ald failure rate: Difference between revisions

Latest revision as of 03:16, 16 August 2012

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-====Lognormal Failure Rate====
+#REDIRECT [[Distributions_Used_in_Accelerated_Testing#The_Lognormal_Distribution]]
-The lognormal failure rate is given by:
-<br>
-::<math>\lambda (T)=\frac{f(T)}{R(T)}=\frac{\tfrac{1}{{T}'{{\sigma }_{{{T}'}}}\sqrt{2\pi }}{{e}^{-\tfrac{1}{2}{{(\tfrac{{T}'-\overline{{{T}'}}}{{{\sigma }_{{{T}'}}}})}^{2}}}}}{\mathop{}_{{{T}'}}^{\infty }\tfrac{1}{{{\sigma }_{{{T}'}}}\sqrt{2\pi }}{{e}^{-\tfrac{1}{2}{{(\tfrac{t-\overline{{{T}'}}}{{{\sigma }_{{{T}'}}}})}^{2}}}}dt}</math>