Fretting is a wear process that results from tangential oscillatory movements of small amplitude in machine parts.
Question:
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a. The sample coefficient of variation 100s/ assesses the extent of variability relative to the mean (specifically, the standard deviation as a percentage of the mean). Calculate the coefficient of variation for the sample at each viscosity. Then compare the results and comment.
b. Construct a comparative boxplot of the data and comment on interesting features.
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Step by Step Answer:
a The sample coefficient of variation is similar for the three highest oil viscosit...View the full answer
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Related Book For 
Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore
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