MC	Given the following decision tree:<br><br><img class="img-fluid" src="http://www.pdbmbook.com/static/quiz/fig20_6.png"><br><br>According to the decision tree, an applicant with Income > $50.000 and High Debt=Yes is classified as:	Bad Risk	correct	Good Risk	incorrect	
MC	Which statement is CORRECT?	The big footprint access to data management and analytics capabilities is a serious drawback of cloud based solutions.	incorrect	On premise solutions catalyze improved collaboration across business departments and geographical locations.	incorrect	An important advantage of cloud based solutions concerns the scalability and economies of scale offered. More capacity (e.g. servers) can be added on the fly whenever needed. 	correct	When using on premise solutions, maintenance or upgrade projects may even go by unnoticed.	incorrect	
MC	What statement about the adjacency matrix representing a social network is not true?	It has the same number of rows and columns. 	incorrect	It can include weights. 	incorrect	It is a symmetric matrix.	incorrect	It is sparse since it contains a lot of non-zero elements.	correct	
MC	Is the following statement true or false? "All given success factors of an analytical model, i.e. relevance, performance, interpretability, efficiency, economical cost and regulatory compliance, are always equally important."	True	incorrect	False	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?	The exchange of confidential information	incorrect	The fact that all analytical activities need to be outsourced	correct	Dilution of competitive advantage due to e.g. mergers and acquisitions.	incorrect	Continuity of the partnership	incorrect	
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	The aim of clustering is to come up with clusters such that the...	homogeneity within a cluster is minimized and the heterogeneity between clusters is minimized.	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 maximized.	incorrect	homogeneity within a cluster is maximized and the heterogeneity between clusters is minimized.	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 maximized.	correct	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 minimized.	incorrect	homogeneity within a cluster is minimized and the heterogeneity between clusters is maximized.	incorrect	
MC	Which statement is CORRECT?	Missing values should always be replaced or removed.	incorrect	Outliers should always be replaced or removed.	incorrect	Missing values and outliers should both 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