Suppose that we go ahead and perform the PCA, in this case using seven components. Considering the following information, which variable or variables might we be well advised to omit from the PCA, and why? If we really need all these variables in the analysis, then what should we do? Communalities 1.000 0.606 1.000 0.836 1.000 0.528 1.000 0.954 1.000 0.704 1.000 0.621 1.000 0.543 1.000 0.637 1.000 0.439 1.000 0.588 1.000 0.710 ZACCTLEN ZVMAILME ZDAYCALL ZDAYCHAR ZEVECALL ZEVECHAR ZNITECAL ZNITECHA ZINTCALL ZINTCHAR ZCSC Initial Extraction Extraction method: Principal component analysis. 15Blake and Merz, 1998. UCI Repository of machine learning databases [http://www.ics.uci .edu/’mlearn/MLRepository.html]. Irvine, CA: University of California, Department of Information and Computer Science. Also available at textbook website: www.DataMiningConsultant.com.