“…Stochastic frontier production function approach (SFPFA) and data envelopment analysis (DEA) are the two main techniques which can be used to estimate the technical efficiency (TE) of firms/industries and other sectors of the economy (Aigner, Lovell & Schmidt, 1977;Meeusen & Van den Broeck, 1977;Chavas & Aliber, 1993;Kumbhakar & Lovell, 2003;Rajesh, 2007;Faruq & Yi, 2010;Akpan et al, 2012;Pattnayak & Chadha, 2013;Kumar & Arora, 2012;Hamjah, 2014;Zhou, 2014;Mahajan, Nauriyal & Singh, 2014;Debnath & Sabastian, 2014;Bhatia & Mahendru, 2015;Munisamy, Fon & Khin, 2015;Sahu, 2015;Ng'ombe & Kalinda, 2015;Narwal & Pathneja, 2015;Ikram, Su & Sadiq, 2016); Okoye et al, 2016;Kea, Li & Pich, 2016;Vu, 2016;Fahmy-Abdullah et al, 2017;Gebresilassie, & Nyatanga, 2017;Singh, Narayanan & Sharma, 2018;Singh, Narayanan & Sharma, 2019). Efficiency is defined as the best allocation of resources to achieve the highest level of output (Bhatia & Mahendru, 2015).…”