Talk:Failure rate

Hazard rate

We should make Failure rate a disambiguation page and move this page to hazard rate. Failure rate is often used confusingly (but not strictly speaking incorrectly!) to refer to either (a) hazard rate or (b) rate of occurrence of failures (ROCoF). The former belongs to parts reliability, the latter to repairable systems reliability. This article is about (a) but might propagate the confusion. Repairable Systems Reliability by Ascher & Feingold puts the matter clearly.

The article also duplicates a lot of stuff that is in survival analysis. I suggest taking the detailed stuff out of survival analysis and putting it into the hazard rate article.Cutler 15:37, Mar 26, 2005 (UTC)

There are several related pages that need to be better organized and cross-referenced: Failure rate, MTBF, Survival analysis, Bathtub curve, Infant mortality and probably some others. I plan to work on this in the near future, starting with merging MTBF with this article. Any comments on the best way to reorganize these pages would be appreciated. Also - nice to see that this page was referenced by the media!

Hazard rate already redirects to this article. DFH 19:02:27, 2005-09-01 (UTC)

As someone who was looking for a widely applicable definition of something called "Failure rate" I found this appropriate to my needs. So, although I took the opportunity to make a few changes for readability/clarity, I would make a strong please for it to stay where it is. (It still needs work done on the references. I don't have time to fix them today.) PeterDz (talk) 16:53, 24 September 2010 (UTC)

Jargon?

what does "projective manifestations" mean?

Delete this remark when the sentence is fixed.

Matt Whyndham 15:33, 31 May 2007 (UTC)

Fixed it; if others agree with the fixes then please delete all of this. PeterDz (talk) 17:00, 24 September 2010 (UTC)

Hazard rate again

Can we please rename this article "hazard rate" and make failure rate redirect to hazard rate? The books never call it a failure rate.

Ogo (talk) 19:07, 24 June 2009 (UTC)

I agree. 'Failure Rate' is never mentioned in any of my textbooks; it's always called Hazard. Paul

Hazard = mean occurence frequency?

Does all that the article explain also mean that the mean frequency of occurence approximates the Hazard? In a neuron that fires 10 spikes per second on average, the Hazard would be 10Hz? Paul

Units - FIT

The given explanation is some how unclear: "The relationship of FIT to MTBF may be expressed as: MTBF = 1,000,000,000 x 1/FIT." To my knowlage this only works for systems with a constant failure rate, however the MTBF is gerally defined for all kind of statistics. The unit of the MTBF may vary. Most of the times it is per year, and I assume that this version is used here, however one should mention the unit used for the MTBF when giving an relation to the FIT value. 194.138.39.52 (talk) 08:39, 26 January 2012 (UTC)