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Simple Linear Regression F-Test for Lack-of-Fit Breaking Strength as Related to Water Pressure for Fiber Webs M.S. Ndaro, X-y. Jin, T. Chen, C-w. Yu (2007). "Splitting of Islands-in-the-Sea Fibers (PA6/COPET) During Hydroentangling of Nonwovens," Journal of Engineered Fibers and Fabrics, Vol. 2, #4

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Data Description Experiment consisted of 30 experimental runs, 5 replicates each at water pressures of 60, 80, 100, 120, 150, 200 when the fiber is hydroentangled Response: Tensile strength (machine direction) of the islands-in-the-sea fibers

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Regression Estimates and Sums of Squares

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Decomposition of Error Sum of Squares

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Matrix Form of Decomposition of SSE - I

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Matrix Form of Decomposition of SSE - II

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Matrix Form of Decomposition of SSE - III

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Lack-of-Fit Test for Fibre Data

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