.If Input values are in figures(Employee cost, Selling Cost, Raw material Cost) and output value in ratios (inventory turnover ratio, Working capital ratio,return on investment ). which model is effective CCR-o or BCC-o or both?
to decide whether to use CCR/BCC model, I recommend using the Banker test. H0 is the assumption of CRS against the alternative of H1 with VRS (Banker and Slaughter 1997; Banker 1996).
DOI: 10.1007/BF00157038
DOI: 10.1287/mnsc.43.12.1709
Furthermore, when I look at your input/output variables, you combine volume measures and ratios. In this case, I recommend reading Dyson et al. (2001).