Template:Example: Median Rank Plot Example: Difference between revisions

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==Weibull Distribution Example 7==
#REDIRECT [[Weibull Distribution Examples]]
 
In this example, we will determine the median rank value used for plotting the sixth failure from a sample size of ten. This will be used to illustrate two of the built-in functions in Weibull++'s Quick Statistical Reference.
 
===Solution to Weibull Distribution Example 7===
 
First, open the Quick Statistical Reference by clicking its icon.
 
 
or by selecting Quick Statistical Reference from the Tools menu.
 
In this example N = 10, j = 6, m = 2(10 - 6 + 1) = 10, and n = 2 x 6 = 12.
 
Thus, from the F-distribution rank equation:
 
 
Calculate the value of F0.50:10:12 by using the Inverse F-Distribution Values option from the Quick Statistical Reference, or F0.50;10;12 = 0.9886 as shown next:
 
 
Consequently:
 
 
Another method is to use the Median Ranks option directly, which yields MR(%) = 54.8305%, as shown next:

Latest revision as of 02:22, 14 August 2012

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