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Results of the regression analysis and coefficient estimation—modulus of elasticity (E = 39.7295 − 0.836401 × cr + 0.000473885 × exp(slf).
| Coefficient | Estimate | Std. Error | Pr (>|t|) | 2.5% | 97.5% | Adj. R2 |
|---|---|---|---|---|---|---|
| b0 | 3.973e+1 | 6.934e−1 | <2e−16 | 38.34327 | 41.11725 | 0.922 |
| b1 | −8.364e−1 | 3.576e−2 | <2e−16 | −0.90794 | −0.76489 | |
| b2 | 4.739e−4 | 3.455e−5 | <2e−16 | 0.00040 | 0.00054 |
