Problem 13.3 (11.3 in 1" edition) 11.3 Cosmetics purchases. The data shown in Figure 11.7 are a subset of a dataset on cosmetic purchases given in binary matrix form. The complete dataset (in the file 13.3_Cosmetics.xls) contains data on the purchases of different cosmetic items at a large chain drugstore. The store wants to analyze associations among purchases of these items for purposes of point-of-sale display, guidance to sales personnel in promoting cross sales, and guidance for piloting an eventual time-of-purchase electronic recommender system to boost cross sales. Consider first only the subset shown in Figure 11.7 (CH10-Assoc-Exer_Cosmetics-small.eps) Trans. # Bagl Blush Nail Polish Brushes Concealer Eyebrow Pencils Bronzer O ooo Figure 1 1.7: Data on cosmetics purchases in binary matrix form. a) Select several values in the matrix and explain their meaning. Answer to 13.3.a: The "0" in the first row, first column under "bag" indicates that, in the first transaction (i.e. the first row), no bag was purchased. The "1" to its right indicates that blush was purchased in that first transaction