Table 8 Independent samples test of CS – DS chains contents by HPLC and CPC methods
Levene test on the equality of variances | T-test for equality of mean | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
F | Sig. | t | ddl | Sig. (bilateral) | Average difference | Difference standard deviation | Confidence interval 95% of the difference | |||
Lower | Upper | |||||||||
Fraction I | Assumption of equal variances | 239.262 | .000 | 1.964 | 4 | .121 | 7.25000 | 3.69116 | −2.99831 | 17.49831 |
Assumption of unequal variances | 1.216 | 1.009 | .437 | 7.25000 | 5.96301 | −66.97839 | 81.47839 | |||
Fraction II | Assumption of equal variances | 3.815 | .146 | −8.709 | 3 | .003 | −9.21667 | 1.05826 | −12.58451 | −5.84882 |
Assumption of unequal variances | −11.230 | 2.015 | .008 | −9.21667 | .82074 | −12.72316 | −5.71018 | |||
Fraction III | Assumption of equal variances | 49.020 | .002 | −3.863 | 4 | .018 | −5.40000 | 1.39777 | −9.28082 | −1.51918 |
Assumption of unequal variances | −2.634 | 1.102 | .212 | −5.40000 | 2.04980 | −26.36791 | 15.56791 | |||