MC	Which of the following is not an advantage of open source software for analytics?	A world-wide network of developers can work on it.	incorrect	It is available for free.	incorrect	It can be used in combination with commercial software. 	incorrect	It has been thoroughly engineered and extensively tested, validated and completely documented.	correct	
MC	Featurization in the context of neural networks refers to...	adding more nodes to the network.	incorrect	selecting the most predictive features.	incorrect	adding more local features to the data set.	incorrect	making features (=inputs) out of the network characteristics.	correct	
MC	Which statement is CORRECT?	Although the benefit component is usually not that difficult to approximate, the costs are much harder to precisely quantify. 	incorrect	All given success factors of an analytical model, i.e. relevance, performance, interpretability, efficiency, economical cost and regulatory compliance, are always equally important.	incorrect	On premise solutions catalyze improved collaboration across business departments and geographical locations.	incorrect	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	
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	Outlying observations which represent erroneous data are treated using...	missing value procedures.	correct	truncation or capping.	incorrect	
MC	Featurization in the context of neural networks refers to...	making features (=inputs) out of the network characteristics.	correct	adding more nodes to the network.	incorrect	selecting the most predictive features.	incorrect	adding more local features to the data set.	incorrect	
MC	Consider a data set with a multiclass target variable as follows: 25% bad payers, 25% poor payers, 25% medium payers and 25% good payers. In this case, the entropy will be:	Maximal	correct	Minimal	incorrect	
MC	Which statement is CORRECT?	The graph theoretic center is the node with the highest minimum distance to all other nodes.	incorrect	The betweenness counts the number of the times that a node or edge occurs in the geodesics of the network.	correct	The geodesic represents the longest path between two nodes.	incorrect	The closeness is always higher than the betweenness.	incorrect	
MC	Which of the following activities are part of the post-processing step?	Model interpretation and validation	incorrect	Sensitivity analysis	incorrect	Model representation	incorrect	All of these activities	correct	
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 can include weights. 	incorrect	It has the same number of rows and columns. 	incorrect