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Oh, your column labels are off though. Reliability is not 1-survivability.<br />
Also, x is usually a time-to-failure, not a percentage.
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Tommy,<br />
<br />
Thanks for the observations. &nbsp;I didn't think that a beta parameter of 40 was valid.<br />
<br />
As far as the column labels, take a look at this article:<br />
<br />
<a href="http://www.qualitydigest.com/jan99/html/body_weibull.html" rel="ugc">http://www.qualitydigest.com/jan99/html/body_weibull.html</a><br />
<br />
The percentage thing is a frequency, we're actually trying to find the reliability of a process producing something 70% of the time.<br />
<br />
Your Thoughts?<br />
<br />
Thanks<br />
<br />
aasikolo<br />

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Anything else you can provide would be appreciated - Thanks again.
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<div class="content wysiwyg-content">
Good Morning,<br />
<br />
I have been working on setting up the attached weibull analysis spreadsheet in Excel. &nbsp;My beta parameter result is 40 from the regression results . &nbsp;This seems unrealistic, I was wondering if someone could take a look at what is attached and let me know if I have an issue, or if the file contains reasonable results. &nbsp;Yes, this is the first time I've used Weibull analysis.<br />
<br />
Thank you<br />
<br />
aasikolo &nbsp; <a href="https://filedb.experts-exchange.com/incoming/2011/10_w41/508871/Weibull.xls" target="_blank" class="file-inline" title="Weibull Analysis (256 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Weibull.xls</a>
</div>
</div>


Weibull.xls

Good Morning,

I have been working on setting up the attached weibull analysis spreadsheet in Excel.  My beta parameter result is 40 from the regression results .  This seems unrealistic, I was wondering if someone could take a look at what is attached and let me know if I have an issue, or if the file contains reasonable results.  Yes, this is the first time I've used Weibull analysis.

Thank you

aasikolo   

Weibull Distribution beta parameter

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Math / Science

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.