Joe
September 1st, 2000, 03:48 PM
[Originally Posted: 1/20/00-- Transferred by ReliaSoft Moderator]
Hi,
My boss is fascinated with the 6 page web article, Weibull's Distribution Application (Step by Step) found at the hyperlink: http://www.geocities.com/CapeCanaveral/Lab/1418/info2.htm
This article starts by providing a data table consisting of equal length times to failure intervals of 100 hours each with the corresponding observed frequency. It then proceeds onto page 2 where it provides the basic graphical formula for t0 as
t0 = t2 - ( ((t3-t2) * (t2-t1)) / ((t3-t2) - (t2-t1)) ) which always becomes t0 = 1,200 - (10,000 / 0 ) when t1=1,100 and t2=1,200 and t3=1,300.
Of course, this is not the case!!! Obviously, we never divide by zero! Then in the Computer Program case, the article states that t0 should be 900 hours.
I would really appreciate some expert advice and insight on the correct application on the formulas given in the article and on the computer program so that I too can crank out the numbers provided in this excellent article to arrive at the same answers! Does Weibull++ provide t0 calculations ability and would it also provide 900 hours as its answer too?
Thank you very much for your kind help, Joe
Hi,
My boss is fascinated with the 6 page web article, Weibull's Distribution Application (Step by Step) found at the hyperlink: http://www.geocities.com/CapeCanaveral/Lab/1418/info2.htm
This article starts by providing a data table consisting of equal length times to failure intervals of 100 hours each with the corresponding observed frequency. It then proceeds onto page 2 where it provides the basic graphical formula for t0 as
t0 = t2 - ( ((t3-t2) * (t2-t1)) / ((t3-t2) - (t2-t1)) ) which always becomes t0 = 1,200 - (10,000 / 0 ) when t1=1,100 and t2=1,200 and t3=1,300.
Of course, this is not the case!!! Obviously, we never divide by zero! Then in the Computer Program case, the article states that t0 should be 900 hours.
I would really appreciate some expert advice and insight on the correct application on the formulas given in the article and on the computer program so that I too can crank out the numbers provided in this excellent article to arrive at the same answers! Does Weibull++ provide t0 calculations ability and would it also provide 900 hours as its answer too?
Thank you very much for your kind help, Joe