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A ppendix A- Statistical Calculation Szabo v. Reliable Car Parts Corporation Wear Test Results



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A ppendix A- Statistical Calculation Szabo v. Reliable Car Parts Corporation Wear Test Results



The result is 2.50 microns Variance Calculations

From each figure, the mean is subtracted to get the difference (Y) in the next column. Each difference is squared to get (M) values on the next column. The average of the squared values gives the variance.

Standard Deviation Calculations

Standard deviation is measures by finding the square root of variance. In our calculations, the variance (VR) is 1.21 microns. Using this variance, we calculate its square toot to get the value of our Standard Deviation (SDV) as 1.05microns




References

Bolton, W. (2014). Engineering Materials Technology. Kent: Elsevier Science


Bruce, R. (2012). Handbook of Lubrication and Tribology: Theory and Design. Second Edition, Volume 2. CRC Press

Gupta, A (2018). Introduction to Automotive Engineering. John Wiley


Holmberg, K., & Matthews, A. (2014). Coatings Tribology: Properties, Mechanisms, Techniques, and Applications in Surface Engineering. Amsterdam: Elsevier Science

Smith, W. F., & Hashemi, J. (2010). Foundations of Materials Science and Engineering.


Dubuque, IA: McGraw-Hill
Wasserman, L. (2010). All of statistics: A concise course in statistical inference. New York: Springer


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