MC	Outlying observations which represent erroneous data are treated using...	truncation or capping.	incorrect	missing value procedures.	correct	
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 minimized 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 minimized.	incorrect	
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."	False	correct	True	incorrect	
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 maximized.	incorrect	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 minimized.	incorrect	homogeneity within a cluster is maximized and the heterogeneity between clusters is maximized.	correct	
MC	Clustering, association rules and sequence rules are examples of:	Predictive analytics	incorrect	Descriptive analytics	correct	
MC	Featurization in the context of neural networks refers to...	selecting the most predictive features.	incorrect	adding more local features to the data set.	incorrect	making features (=inputs) out of the network characteristics.	correct	adding more nodes to the network.	incorrect	
MC	Bootstrapping refers to:	Drawing samples without replacement.	incorrect	Drawing samples with replacement.	correct	
MC	What statement about the adjacency matrix representing a social network is not true?	It can include weights. 	incorrect	It is sparse since it contains a lot of non-zero elements.	correct	It has the same number of rows and columns. 	incorrect	It is a symmetric matrix.	incorrect	
MC	Which statement is NOT CORRECT?	Although the benefit component is usually not that difficult to approximate, the costs are much harder to precisely quantify. 	correct	For companies like Facebook, Amazon, Netflix and Google a positive ROI is obvious since they essentially thrive on data and analytics. 	incorrect	Negative ROI of analytics often boils down to the lack of good quality data, management support and a company-wide data driven decision culture 	incorrect	ROI analysis offers a common firm-wide language to compare multiple investment opportunities and decide which one(s) to go for.	incorrect	
MC	To guarantee maximum independence and organizational impact of analytics, it is important that...	analytics is supervised only locally in the business units. 	incorrect	the CIO takes care of all analytical responsibilities.	incorrect	the Chief Data Officer (CDO) or Chief Analytics Officer (CAO) reports to the CIO or CFO.	incorrect	a Chief Data Officer or Chief Analytics officer is added to the executive committee who directly reports to the CEO.	correct