Table 5.

Results of analysis of tablets by the proposed methods and statistical comparison with the reference method.

Tablets analysed	Label claim, mg/tablet	Found* (percent of label claim ± SD)
		Reference method	Proposed methods
			Method A	Method B	Method C
Asthafen	1	100.8 ± 0.91	101.4 ± 0.89	102.8 ± 1.91	102.1 ± 1.75
			t = 1.05	t = 2.11	t = 2.16
			F = 1.05	F = 4.41	F = 3.7
Ketasma	1	102.3 ± 1.02	100.6 ± 0.98	102.8 ± 1.36	101.3 ± 0.88
			t = 2.69	t = 0.66	t = 1.66
			F = 1.08	F = 1.78	F = 1.34

 *Mean value of five determinations;

Tabulated t value at the 95% confidence level is 2.78.

Tabulated F value at the 95% confidence level is 6.39.