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【学术求助】spss统计问题
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做了一个试验，用SPSS线性回归，结果如下。请问结果是否有显著性，特别是最后裂缝间距得P=0.215,不知何意？？盼高手解答，谢谢！！ Variables Entered/Removed(b,c) Model Variables Entered Variables Removed Method 1 裂缝间距, 裂缝宽度(a) . Enter a All requested variables entered. b Dependent Variable: 损伤长度 c Linear Regression through the Origin Model Summary Model R R Square(a) Adjusted R Square Std. Error of the Estimate 1 .984(b) .969 .960 7.45808 a For regression through the origin (the no-intercept model), R Square measures the proportion of the variability in the dependent variable about the origin explained by regression. This CANNOT be compared to R Square for models which include an intercept. b Predictors: 裂缝间距, 裂缝宽度 ANOVA(c,d) Model Sum of Squares df Mean Square F Sig. 1 Regression 12041.108 2 6020.554 108.239 .000(a) Residual 389.360 7 55.623 Total 12430.469(b) 9 a Predictors: 裂缝间距, 裂缝宽度 b This total sum of squares is not corrected for the constant because the constant is zero for regression through the origin. c Dependent Variable: 损伤长度 d Linear Regression through the Origin Coefficients(a,b) Model Unstandardized Coefficients Standardized Coefficients t Sig. B Std. Error Beta 1 裂缝宽度 135.282 26.988 .786 5.013 .002 裂缝间距 .126 .093 .214 1.364 .215 a Dependent Variable: 损伤长度 b Linear Regression through the Origin [ Last edited by mainpro on 2006-9-21 at 23:29 ] |
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