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

Latest revision as of 02:22, 14 August 2012

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-'''Median Rank Plot Example'''
+#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'''
-First, open the Quick Statistical Reference by clicking its icon.
-[[Image: QSP.png|thumb|center|400px]]
-or by selecting '''Quick Statistical Reference''' from the '''Home''' 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:
-<center>::<math>MR=\frac{1}{1+\left( \frac{10-6+1}{6} \right){{F}_{0.5;10;12}}}</math>
-</center>
-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:
-[[Image: F Inverse.png|center]]
-Consequently:
-<center>::<math>MR=\frac{1}{1+\left( \frac{5}{6} \right)\times 0.9886}=0.5483=54.83%</math>
-</center>
-Another method is to use the Median Ranks option directly, which yields MR(%) = 54.8305%, as shown next:
-[[Image: MR.png|center]]