Source of variation d.f. S.S. M.S.S. Cal. F Tab. F 1% S.E.M ± C.D. @ 5% Test
Three levels of Centrifuge speed 2 6.8x10-5 3.4x10-5 882.212 3.12 2.7x10-5 7.5x10-5 Sig.
Three levels of Centrifuge speed with two levels of acetone 2 1.3x10-5 6.7x10-6 173.610 3.12 3.8x10-5 1.1x10-4 Sig.
Three levels of Centrifuge speed with three levels of temperature 4 8.7x10-7 2.2x10-7 5.581 2.43 4.6x10-5 1.3x10-4 Sig.
Three levels of Centrifuge speed with three levels of centrifuge holding time 4 1.7x10-6 4.4x10-7 11.264 2.43 4.6x10-5 1.3x10-4 Sig.
Three levels of Centrifuge speed, two levels of acetone and three levels of temperature 4 1.7x10-6 4.2x10-7 10.903 2.43 6.5x10-5 1.8x10-4 Sig.
Three levels of Centrifuge speed with three levels of temperature  and three levels of holding time 8 9.1x10-7 1.1x10-7 2.943 2.01 6.5x10-5 2.3x10-4 Sig.
Three levels of different centrifuge speed with two levels of acetone and three levels of holding time 4 5.5x10-7 1.4x10-7 3.568 2.43 6.5x10-5 1.8x10-4 Sig.
Three levels of different centrifuge speed with two levels of acetone, three levels of temperature and three levels of holding time 8 9.2x10-7 1.1x10-7 2.965 2.01 1.1x10-4 3.2x10-4 Sig.
Error 108 4.2x10-6 4.0x10-8          
Total 80              
C.V.,% = 0.015
d.f. = degree of freedom
S.S. = sum of squares
M.S.S. = mean of sum of squares
Cal. F = calculated F vale
Tab. F 1% = table F value
S.E.M. = standard error of mean
C.D. = critical difference
C.V. = coefficient of variation
Table 5: Analysis of variance table for refractive index.