The regression coefficients from the second order equations foreach dependent variable can be observed in Table 3, along with theircorresponding p, F (calculated and tabulated) and R2values. Theanalysis of variance (ANOVA) at the 95% confidence level impliedthat tensile strength (TS) presented calculated F values lower thanthe tabulated values, as well as a low R2value, meaning that, forthe studied range, the model was not able to explain the quadraticdata behavior. All other parameters were statistically significant,with high coefficient of determination (Fc > Ft; R2≥ 0.88; p < 0.05).