Table 8: ANOVA table.

SourceDF SSMSF-ratio% contribution

A20.004640.002320.220.71
B20.030210.015111.424.61
C20.160780.080397.58*24.51
D20.117060.058535.52*17.85
A B40.060390.01511.429.21
A C40.194110.048534.57*29.59
B C40.02510.006270.593.83
Error60.063670.010619.71

Total260.65596100.00

S ignificant at 95% confidence level ( 𝐹 2 , 6 , 0 . 0 5 = 5.14 and 𝐹 4 , 6 , 0 . 0 5 = 4.53).