“…Clearly, in practice, one does not have access to the true density function f(x) which is to be estimated (Wand andJones 1995, Wu et al 2006). Thus, a number of approaches can be taken for finding the bandwidth that will lead to better density estimation via varying the bandwidths (Wand and Jones 1995, Katkovnik 1999, Jarnicka 2009, Ogbeide et al 2016. Details studies on the Histograms which are the oldest density methods, the Scatter plots, the Orthogonal series density, the nearest neighbour method and the Projection pursuit density estimation approaches can be seen in (Tukey 1947, Cencov 1962, Friedman and Stuetzle 1982, Rudemo 1982, Scott and Thompson 1983, Silverman 1986, Wand and Jones 1995, Isenman 1991, Bowman and Azzalini 1997.…”