HARDNESS_Explanation

HARDNESS_Explanation - Scatter Diagram 120 100 f(x) =...

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22 24 26 28 30 32 34 36 38 40 0 20 40 60 80 100 120 f(x) = 2.0190569365x + 6.0482708186 R² = 0.4612923133 Scatter Diagram Y = Tensile strength(1000lbs/sqinch) Linear Regression for Y = Tensile strength(1 X Y
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Confidence Interval Estimate Data X Value 30 Confidence Level 95% Intermediate Calculations Sample Size 35 Degrees of Freedom 33 t Value 2.0345153 XBar, Sample Mean of X 30.510857 Sum of Squared Differences from XBar 569.18427 Standard Error of the Estimate 9.0616341 h Statistic 0.0290299 Predicted Y (YHat) 66.619979 For Average Y Interval Half Width 3.1411633 Confidence Interval Lower Limit 63.47882 Confidence Interval Upper Limit 69.76114 For Individual Response Y Interval Half Width 18.701717 Prediction Interval Lower Limit 47.91826 Prediction Interval Upper Limit 85.3217
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Durbin-Watson Calculations Sum of Squared Difference of Residuals 7092.31788 Sum of Squared Residuals 2709.735988 Durbin-Watson Statistic 2.6173464538
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22 24 26 28 30 32 34 36 38 40 -20 -15 -10 -5 0 5 10 15 20 X = Hardness(Rockwell E units Residual Plot X = Hardness(Rockwell E units Residuals
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HARDNESS_Explanation - Scatter Diagram 120 100 f(x) =...

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