An Empirical Study of Hybrid DEA and Grey System Theory on Analyzing Performance: A Case from Indian Mining Industry

Table 15

Productivity index (Malmquist-MPI) change over the period 2010 to 2014.

Malmquist	2010 => 2011	2011 => 2012	2012 => 2013	2013 => 2014	Average
DMU1	1.545797114	1.309221254	1.028622365	0.840635021	1.181068938
DMU2	2.015905198	1.10571636	0.82675343	0.964586441	1.228240357
DMU3	0.490011136	0.798958453	0.70781135	1.08692264	0.770925894
DMU4	1.033251374	1.086435341	1.029830568	1.01707566	1.041648236
DMU5	2.015905198	1.10571636	0.82675343	0.964586441	1.228240357
DMU6	0.808198851	1.404053105	0.837798856	0.956179723	1.001557634
DMU7	0.673792601	0.586466544	1.242472165	0.989430703	0.873040503
DMU8	1.345873019	1.10756626	0.862113	0.928776162	1.06108211
DMU9	0.53428624	1.108093608	1.155431935	0.996761875	0.948643415
DMU10	1.545577938	0.506433239	0.073627354	9.751618997	2.969314382
DMU11	1.127229082	1.246476571	1.187183531	0.759561202	1.080112596
DMU12	0.954612304	0.629831235	0.510399744	19.05436823	5.287302877
DMU13	3.767615006	0.363731928	0.85236047	0.75627938	1.434996696
DMU14	0.978423652	0.831255052	1.175347113	0.999633621	0.99616486
DMU15	1.120585111	0.458012204	0.998276177	51.83015232	13.60175645
DMU16	10.69091327	8.083889578	0.123509827	1.219668695	5.029495342
DMU17	1.228103042	1.555559234	1.024825525	1.488477741	1.324241385
DMU18	0.628739377	1.801108782	0.234058131	0.036837705	0.675185999
DMU19	2.684183223	0.220316389	0.131423949	94.77861863	24.45363555
DMU20	1.095824176	0.931013697	1.11412316	0.874974664	1.003983924
DMU21	2.511457379	0.272691989	2.222132539	1.028761724	1.508760908
DMU22	0.940015391	1	1	0.593251026	0.883316604
DMU23	0.086500142	33.49129408	0.01	0.781881615	8.59241896
Average	1.731426079	2.652340925	0.833689331	8.37821914	3.398918869
Max	10.69091327	33.49129408	2.222132539	94.77861863	24.45363555
Min	0.086500142	0.220316389	0.01	0.036837705	0.675185999
SD	2.119828504	6.898136352	0.49641247	21.87797994	5.533163948