Polymers 2021 , 13 , 709
8of 13
Table3. ANOVA table for Col_4 Time-to-ignition by Col_2 thickness.
Source
Sum of Squares
Df
Mean Square
F-Ratio
P-Value
Between Groups Within Groups
12,608.1 170,953 183,561
2
6304.03 1461.13
4.31
0.0156
117 119
Total (Corr.)
Figure 5. Graphical representation of the statistical evaluation of the influence of the board thickness on the ignition time under the action of the radiant heat source on the OSB. Legend: Col_2, thickness; Col_4, Time-to-ignition. Concurrently, a significant dependence of the ignition time on the heat flux was confirmed (Table 4, Figure 6). The ANOVA table decomposes the variance of Col_4 into two components: Time-to-ignition and heat flux. The F-ratio, which in this case equals 17.5456, is a ratio of the between-group estimate to the within-group estimate. Since the P-value of the F-test is less than 0.05, there is a statistically significant difference between the means Col_4 Time-to-ignition from one level of Col_1 heat flux to another at the 5% significance level. To determine which means are significantly different from which others, select Multiple Range (Table 4).
Figure 6. Graphical representation of the statistical evaluation of the influence of heat flux on ignition time under the action of a radiant heat source on the OSB. Legend: Col_1, heat flux; Col_4, Time-to-ignition.
Made with FlippingBook Online newsletter maker