Introduction
One of the important environmental issue in the oil and gas industry is
the interaction between formation water and meteoric groundwater.
Despite the vast exploration techniques used in the oil and gas
industry, but statistical analysis in the environmental analysis hasn’t
bee fully developed (D. E. Irawan, Iqbal, and Maulana 2015). Univariate
and bivariate techniques have already frequently used in the
environmental study however the application of multivariate
analysis/statistics is still very low. This paper is a continuance from
a IPA paper discussing the importance of multivariate analysis in sample
classification (D. E. Irawan, Iqbal, and Maulana 2015).