Drug name Recovery ± SD Calculated t-values Calculated F-values Proposed methods Reference method Amlodipine Besylate 100 .78±1.79 100.39±2.56 0.36 0.49 Atorvastatin Calcium 100.53±1.23 100.18±2.02 0.49 0.37 (Where the Tabulated t-values and F-ratios at p=0.05 are 2.365 and 3.79)

Table 5: Statistical comparison of the proposed and published methods for determination of Amlodipine Besylate and Atorvastatin Calcium respectively in their dosage forms by reported method (T-student test) and (F-test for variance).