User contributions for Lisa Hacker

23:5023:50, 8 March 2023 diff hist +13‎ Life Data Analysis Reference Book ‎No edit summary
23:4923:49, 8 March 2023 diff hist +59‎ Life Data Analysis Reference Book ‎No edit summary
23:4823:48, 8 March 2023 diff hist +38‎ Life Data Analysis Reference Book ‎No edit summary
23:4723:47, 8 March 2023 diff hist +53‎ Lognormal Confidence Bounds ‎No edit summary
23:4623:46, 8 March 2023 diff hist +53‎ Lognormal Parameter Estimation ‎No edit summary current
23:4423:44, 8 March 2023 diff hist −40,892‎ The Lognormal Distribution ‎ Replaced content with "{{template:LDABOOK|10|The Lognormal Distribution}} The lognormal distribution is commonly used to model the lives of units whose failure modes are of a fatigue-stress nature. Since this includes most, if not all, mechanical systems, the lognormal distribution can have widespread application. Consequently, the lognormal distribution is a good companion to the Weibull distribution when attempting to model these types of units. As may be surmised by the name, the logno..." Tag: Replaced
23:4423:44, 8 March 2023 diff hist +24,512‎ N Lognormal Confidence Bounds ‎ Created page with " ==Confidence Bounds== The method used by the application in estimating the different types of confidence bounds for lognormally distributed data is presented in this section. Note that there are closed-form solutions for both the normal and lognormal reliability that can be obtained without the use of the Fisher information matrix. However, these closed-form solutions only apply to complete data. To achieve consistent application across all possible data types, Weibull+..."
23:4223:42, 8 March 2023 diff hist +16,303‎ N Lognormal Parameter Estimation ‎ Created page with "==Estimation of the Parameters== ===Probability Plotting=== As described before, probability plotting involves plotting the failure times and associated unreliability estimates on specially constructed probability plotting paper. The form of this paper is based on a linearization of the ''cdf'' of the specific distribution. For the lognormal distribution, the cumulative density function can be written as: ::<math>F({t}')=\Phi \left( \frac{{t}'-{\mu }'}{{{\sigma'}}} \ri..."
00:0700:07, 8 March 2023 diff hist +2,094‎ m The Weibull Distribution ‎ Reverted edits by Lisa Hacker (talk) to last revision by M Spivey Tag: Rollback
00:0100:01, 8 March 2023 diff hist −2,094‎ The Weibull Distribution ‎No edit summary Tag: Reverted

23:5323:53, 7 March 2023 diff hist +38,628‎ The Weibull Distribution ‎No edit summary Tag: Reverted
23:5123:51, 7 March 2023 diff hist +94‎ The Weibull Distribution ‎No edit summary Tag: Reverted
23:5023:50, 7 March 2023 diff hist −93‎ The Weibull Distribution ‎No edit summary Tag: Reverted
23:5023:50, 7 March 2023 diff hist +164‎ The Weibull Distribution ‎No edit summary Tag: Reverted
23:4923:49, 7 March 2023 diff hist +1,070‎ The Weibull Distribution ‎No edit summary Tag: Reverted
23:4923:49, 7 March 2023 diff hist −39,863‎ The Weibull Distribution ‎ Replaced content with "{{template:LDABOOK|8|The Weibull Distribution}} The Weibull distribution is one of the most widely used lifetime distributions in reliability engineering. It is a versatile distribution that can take on the characteristics of other types of distributions, based on the value of the shape parameter, <math> {\beta} \,\!</math>. This chapter provides a brief background on the Weibull distribution, presents and derives most of the applicable equations and presents example..." Tags: Replaced Reverted
22:0522:05, 7 March 2023 diff hist +7‎ Template:LDABOOK ‎No edit summary