highly significantP < 0.01
The data in Table 7 indicate that the effects of B , H , BC , BH , CH , B 2 , C 2 , and H 2 on slump error are highly significant (P < 0.01), while the effect of C on slump error is not significant (P > 0.05).
The data in Table 7 indicate that the effects of B , H , BC , BH , CH , B 2 , C 2 , and H 2 on slump error are highly significant (P < 0.01), while the effect of C on slump error is not significant (P > 0.05).