“…Suppose a sample size n is to be taken from the whole population, and let nrs denote the sample size allocated to the (r, s) th stratum and zrsi the values of the population units in the (r, s) th , i = 1, 2, 3,… Let the variable Z be the study variable defined by where i = h + 1, h + 2,…, T -1, and j = k + 1, k + 2,…, U -1, and μrsz denotes the mean of the population for Z in (r, s) th stratum. The minimal equations given above were obtained by Dalenius (1950) when the stratification variable is same as the estimation variable. When the density functions of the auxiliary variables Y and X are known, then the distribution of Z is not known due to the auxiliary variables used to obtain optimum points.…”