MC	Which of the following costs should be included in a Total Cost of Ownership (TCO) analysis?	Acquisition costs	incorrect	Ownership and operation costs	incorrect	Post ownership costs	incorrect	All of these costs	correct	
MC	Decision trees can be used in the following applications:	Credit risk scoring	incorrect	Credit risk scoring, churn prediction and customer profile segmentation	incorrect	Credit risk scoring, churn prediction, customer profile segmentation and market basket analysis.	incorrect	Credit risk scoring and churn prediction	correct	
MC	Which of the following are interesting data sources to consider to boost the performance of analytical models?	Network data	incorrect	External data	incorrect	Unstructured data such as text data and multimedia data	incorrect	All of the above	correct	
MC	Which statement is CORRECT?	Missing values and outliers should both always be replaced or removed.	incorrect	Outliers should always be replaced or removed.	incorrect	Missing values should always be replaced or removed.	incorrect	Missing values and outliers can potentially provide useful information and should be analyzed before they are removed/replaced.	correct	
MC	Outlying observations which represent erroneous data are treated using...	truncation or capping.	incorrect	missing value procedures.	correct	
MC	The GIGO-principle mainly relates to which aspect of the analytics process?	Data selection	incorrect	Data transformation	incorrect	Data cleaning	incorrect	The GIGO-principle applies to all of these listed aspects	correct	
MC	Which of the following is not a risk when outsourcing analytics?	Dilution of competitive advantage due to e.g. mergers and acquisitions.	incorrect	The fact that all analytical activities need to be outsourced	correct	The exchange of confidential information	incorrect	Continuity of the partnership	incorrect	
MC	What statement about the adjacency matrix representing a social network is not true?	It is sparse since it contains a lot of non-zero elements.	correct	It is a symmetric matrix.	incorrect	It has the same number of rows and columns. 	incorrect	It can include weights. 	incorrect	
MC	Decision trees can be used in the following applications:	Credit risk scoring	incorrect	Credit risk scoring, churn prediction, customer profile segmentation and market basket analysis.	incorrect	Credit risk scoring and churn prediction	correct	Credit risk scoring, churn prediction and customer profile segmentation	incorrect	
MC	The aim of clustering is to come up with clusters such that the...	homogeneity within a cluster is maximized and the heterogeneity between clusters is minimized.	incorrect	homogeneity within a cluster is minimized and the heterogeneity between clusters is maximized.	incorrect	homogeneity within a cluster is maximized and the heterogeneity between clusters is maximized.	correct	homogeneity within a cluster is minimized and the heterogeneity between clusters is minimized.	incorrect