highly significantp < 0.01
The impact of the process variables on TSS was highly significant at the 1% level of significance ( p < 0.01) for both linear and interactive terms, while the quadratic term has 5% level of significance ( p < 0.05).
The impact of the process variables on TSS was highly significant at the 1% level of significance ( p < 0.01) for both linear and interactive terms, while the quadratic term has 5% level of significance ( p < 0.05).