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Table 6 Results of ANOVA for response surface quadratic model

From: Statistical optimization of chitinase production by Streptomyces rubiginosus SP24 and efficacy of purified chitinase to control root-knot nematode infection in Vigna radiata under controlled conditions

Source Sum of squares df Mean square F-value p value Prob > F
Model 15.64013333 10 1.56401333 9.352075121 < 0.0001
A colloidal chitin 8.200533333 1 8.20053333 49.03539 < 0.0001
B xylose 2.6508 1 2.6508 15.85055588 0.0009
C peptone 2.3232 1 2.6508 13.89165965 0.0015
D Dihydrogen potassium phosphate 0.3468 1 0.3468 2.073703326 0.1670
AB 1.0404 1 1.0404 6.221109979 0.0226
AC 0.1225 1 0.1225 0.732493245 0.4033
AD 0.3721 1 0.3721 2.224985605 0.1531
BC 0.1369 1 0.1369 0.818598574 0.3775
BD 0.3025 1 0.3025 1.808809851 0.1954
CD 0.1444 1 0.1444 0.863445099 0.3651
Residual 3.010266667 18 0.16723704   
Lack of fit 1.364346667 14 0.09745333 0.236836136 0.9810
Pure error 1.64592 4 0.41148   
Cor total 18.6504 28    
  1. R-Squared 0.838595, Adj R-Squared 0.748926, Pred R-Squared 0.662642, Adeq Precision 11.52083