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±¾È˸սӴ¥ÏìÓ¦ÃæÊÔÑ飬¶ÔÓÚÏìÓ¦ÃæµÄ·ÖÎöȷʵÊǸöÃÅÍ⺺£¬ÏÖÔÚ½«ÊÔÑé½á¹û¸½ÉÏ£¬Çë´óÉñ°ïÎÒ·ÖÎöһϣ¬Ð»Ð»£¬ÔÚÏߵȰ¡~~~ ANOVA for Response Surface Quadratic Model Analysis of variance table [Partial sum of squares - Type III] Sum of Mean F p-value Source Squares df Square Value Prob > F Block 103.43 2 51.72 Model 995.35 14 71.10 2.14 0.1151 not significant A-SPI:MD 8.10 1 8.10 0.24 0.6321 B-о²Äº¬Á¿ 385.56 1 385.56 11.60 0.0067 C-È黯¼Áº¬Á¿ 0.62 1 0.62 0.019 0.8943 D-¹ÌÐÎÎﺬÁ¿ 0.090 1 0.090 2.713E-003 0.9595 AB 140.19 1 140.19 4.22 0.0670 AC 0.058 1 0.058 1.734E-003 0.9676 AD 0.23 1 0.23 6.935E-003 0.9353 BC 65.37 1 65.37 1.97 0.1910 BD 37.27 1 37.27 1.12 0.3144 CD 7.48 1 7.48 0.23 0.6453 A^2 56.00 1 56.00 1.69 0.2233 B^2 85.96 1 85.96 2.59 0.1388 C^2 3.48 1 3.48 0.10 0.7528 D^2 106.11 1 106.11 3.19 0.1042 Residual 332.25 10 33.23 Cor Total 1431.03 26 The "Model F-value" of 2.14 implies the model is not significant relative to the noise. There is a 11.51 % chance that a "Model F-value" this large could occur due to noise. Values of "Prob > F" less than 0.0500 indicate model terms are significant. In this case B are significant model terms. Values greater than 0.1000 indicate the model terms are not significant. If there are many insignificant model terms (not counting those required to support hierarchy), model reduction may improve your model. Std. Dev. 5.76 R-Squared 0.7497 Mean 76.06 Adj R-Squared 0.3994 C.V. % 7.58 Pred R-Squared -0.8626 PRESS 2472.73 Adeq Precision 5.986 A negative "Pred R-Squared" implies that the overall mean is a better predictor of your response than the current model. "Adeq Precision" measures the signal to noise ratio. A ratio greater than 4 is desirable. Your ratio of 5.986 indicates an adequate signal. This model can be used to navigate the design space. Coefficient Standard 95% CI 95% CI Factor Estimate df Error Low High VIF Intercept 74.06 1 3.33 66.64 81.48 Block 1 2.63 2 Block 2 -2.07 Block 3 -0.56 A-SPI:MD 0.82 1 1.66 -2.89 4.53 1.00 B-о²Äº¬Á¿ -5.67 1 1.66 -9.38 -1.96 1.00 C-È黯¼Áº¬Á¿ 0.23 1 1.66 -3.48 3.93 1.00 D-¹ÌÐÎÎﺬÁ¿ -0.087 1 1.66 -3.79 3.62 1.00 AB 5.92 1 2.88 -0.50 12.34 1.00 AC 0.12 1 2.88 -6.30 6.54 1.00 AD 0.24 1 2.88 -6.18 6.66 1.00 BC -4.04 1 2.88 -10.46 2.38 1.00 BD -3.05 1 2.88 -9.47 3.37 1.00 CD -1.37 1 2.88 -7.79 5.05 1.00 A^2 3.24 1 2.50 -2.32 8.80 1.25 B^2 -4.01 1 2.50 -9.58 1.55 1.25 C^2 0.81 1 2.50 -4.75 6.37 1.25 D^2 4.46 1 2.50 -1.10 10.02 1.25 Final Equation in Terms of Coded Factors: ΢½ºÄÒ°üÂñÂÊ = +74.06 +0.82 * A -5.67 * B +0.23 * C -0.087 * D +5.92 * A * B +0.12 * A * C +0.24 * A * D -4.04 * B * C -3.05 * B * D -1.37 * C * D +3.24 * A^2 -4.01 * B^2 +0.81 * C^2 +4.46 * D^2 Final Equation in Terms of Actual Factors: ΢½ºÄÒ°üÂñÂÊ = +74.06000 +0.82167 * SPI:MD -5.66833 * о²Äº¬Á¿ +0.22667 * È黯¼Áº¬Á¿ -0.086667 * ¹ÌÐÎÎﺬÁ¿ +5.92000 * SPI:MD * о²Äº¬Á¿ +0.12000 * SPI:MD * È黯¼Áº¬Á¿ +0.24000 * SPI:MD * ¹ÌÐÎÎﺬÁ¿ -4.04250 * о²Äº¬Á¿ * È黯¼Áº¬Á¿ -3.05250 * о²Äº¬Á¿ * ¹ÌÐÎÎﺬÁ¿ -1.36750 * È黯¼Áº¬Á¿ * ¹ÌÐÎÎﺬÁ¿ +3.24042 * SPI:MD^2 -4.01458 * о²Äº¬Á¿^2 +0.80792 * È黯¼Áº¬Á¿^2 +4.46042 * ¹ÌÐÎÎﺬÁ¿^2 The Diagnostics Case Statistics Report has been moved to the Diagnostics Node. In the Diagnostics Node, Select Case Statistics from the View Menu. Proceed to Diagnostic Plots (the next icon in progression). Be sure to look at the: 1) Normal probability plot of the studentized residuals to check for normality of residuals. 2) Studentized residuals versus predicted values to check for constant error. 3) Externally Studentized Residuals to look for outliers, i.e., influential values. 4) Box-Cox plot for power transformations. If all the model statistics and diagnostic plots are OK, finish up with the Model Graphs icon. |
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