“…The approach of sampling over successive waves has been made more fruitful by using twisted and novel ways to consider extra information along with the study character. Enhanced literature has been made availableby Patterson (1950), Narain (1953), Eckler (1955), Sen(1971Sen( , 1972Sen( , 1973, Gordon (1983), , Arnab and Okafor (1992), Feng and Zou (1997), Biradar and Singh (2001), Singh and Singh (2001), Singh (2005), Singh and Priyanka (2006, 2007, 2008, Singh and Karna (2009), Singh and Prasad (2010), Singh et al (2011), Singh et al (2013), Bandyopadhyay and Singh(2014), Priyanka and Mittal (2014), , Mittal (2015a, 2015b)etc.…”