In the Excel solution file accompanying this chapter, a data set on hairdresser customers is included (sheet named P- 12- 10- Data). The data contain information about the various characteristics of existing customers and whether they responded positively to a previously given offer (Yes/ No). The hairdresser now has information about five new customers and wants your help in determining which of these new customers are likely to respond “Yes” to a similar offer. Use the k- nearest neighbor algorithm (with k=3 and a threshold of 0.5) to classify these five new customers. Also assess the performance of your classification results using the metrics described in the chapter.

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Information about new customers that should be classified into yes/no Customer # 1 Hair cuts/yr 6 Age 25 2851 3 4 2 65 52 Distance city (km) 5.80 16.05 2.14 +520 5 15 79 26 12 16 0.60 0.75