statistics - How to MLE estimation of LogNormal data with right-censored failure times? -

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so far examples have found "complete" failure data. in line of work, data includes failure times units , times units have not failed yet (right-censored). wondering if can point me reference material on how calculate lognormal parameters using mle method when data includes censored data.

edit: should add in end, need newton-raphson equation numerically solve log-normal parameters or other numerical algorithm since there no closed-form solution obtain parameters directly.


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