MC	Which statement is CORRECT?	The graph theoretic center is the node with the highest minimum distance to all other nodes.	incorrect	The closeness is always higher than the betweenness.	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	
MC	OLAP (On-Line Analytical Processing) can help in which of the following steps of the analytics process?	Data visualization	correct	Data collection	incorrect	Data denormalizatio	incorrect	Data transformation	incorrect	
MC	Featurization in the context of neural networks refers to...	making features (=inputs) out of the network characteristics.	correct	selecting the most predictive features.	incorrect	adding more nodes to the network.	incorrect	adding more local features to the data set.	incorrect	
MC	OLAP (On-Line Analytical Processing) can help in which of the following steps of the analytics process?	Data visualization	correct	Data transformation	incorrect	Data denormalizatio	incorrect	Data collection	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	Which statement is CORRECT?	The geodesic represents the longest path between two nodes.	incorrect	The betweenness counts the number of the times that a node or edge occurs in the geodesics of the network.	correct	The graph theoretic center is the node with the highest minimum distance to all other nodes.	incorrect	The closeness is always higher than the betweenness.	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	What statement about the adjacency matrix representing a social network is not true?	It is a symmetric matrix.	incorrect	It is sparse since it contains a lot of non-zero elements.	correct	It can include weights. 	incorrect	It has the same number of rows and columns. 	incorrect	
MC	Outlying observations which represent erroneous data are treated using...	missing value procedures.	correct	truncation or capping.	incorrect	
MC	Which statement is CORRECT?	The closeness is always higher than the betweenness.	incorrect	The geodesic represents the longest path between two nodes.	incorrect	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