Table 4.
Statistical analysis of PBD showing coefficient value, standard error coefficient value, T and P value for each variable.
| Term | Coefficient | SE Coefficient | T-Value | P-Value |
|---|---|---|---|---|
| Constant | 31.45 | 2.48 | 12.68 | 0.000 |
| Temp (°C) | -4.37 | 1.34 | -3.26 | 0.005 |
| Tryptone (%) | 1.25 | 1.34 | 0.94 | 0.363 |
| Inoculum size (%) | 0.47 | 1.34 | 0.35 | 0.728 |
| Incubation time (hrs) | -8.77 | 1.34 | -6.54 | 0.000 |
| Temp (°C)*Temp (°C) | -3.44 | 1.23 | -2.80 | 0.013 |
| Tryptone (%)*Tryptone (%) | -3.14 | 1.23 | -2.56 | 0.021 |
| Inoculum size (%)*Inoculum size (%) | -3.43 | 1.23 | -2.79 | 0.013 |
| Incubation time (hrs)*Incubation time (hrs) | -1.93 | 1.23 | -1.57 | 0.136 |
| Temp (°C)*Tryptone (%) | 0.41 | 1.64 | 0.25 | 0.805 |
| Temp (°C)*Inoculum size (%) | -0.44 | 1.64 | -0.27 | 0.794 |
| Temp (°C)*Incubation time (hrs) | 5.48 | 1.64 | 3.34 | 0.004 |
| Tryptone (%)*Inoculum size (%) | 0.29 | 1.64 | 0.18 | 0.860 |
| Tryptone (%)*Incubation time (hrs) | -0.11 | 1.64 | -0.07 | 0.949 |
| Inoculum size (%)*Incubation time (hrs) | -0.39 | 1.64 | -0.24 | 0.813 |