Reliability Discussion Forum  

Go Back   Reliability Discussion Forum > Reliability Discussion Forums > General Reliability Discussion > Weibull and Life Data Analysis

Thread Tools Display Modes
Old June 7th, 2017, 09:47 AM
Michael1408 Michael1408 is offline
Join Date: Mar 2011
Location: San Diego, CA
Posts: 38
Default Weibull analysis of the population?

I got myself confused and I was hoping someone could 'unconfuse' me

I have failure/survival data for an entire population and I am tasked on creating a vba code that would analyze the data for warranty prediction purposes

1. From what I know, a weibull analysis is performed on a samples under test not the entire population, calculating the median rank would require an assumption for the confidence level. Correct me I am wrong, but confidence level is used for samples statistics and makes no sense to use on for population, correct?

2. Do I exclude units failing at Time = 0? feels like they should be included

3. If data shows a couple of units failing at the same exact time, do they get the same order number for median rank calculations?

Last edited by Michael1408; June 7th, 2017 at 10:04 AM.
Reply With Quote

analysis, field, population, warranty, weibull

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -7. The time now is 12:35 PM.

Powered by vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 1992-2014 ReliaSoft Corporation, All Rights Reserved