MC	Which of the following is not a risk when outsourcing analytics?	The fact that all analytical activities need to be outsourced	correct	Continuity of the partnership	incorrect	The exchange of confidential information	incorrect	Dilution of competitive advantage due to e.g. mergers and acquisitions.	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	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	
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	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	Outlying observations which represent erroneous data are treated using...	missing value procedures.	correct	truncation or capping.	incorrect	
MC	Which of the following measures cannot be used to make the splitting decision in a regression tree?	ANOVA/F-test	incorrect	Entropy	correct	Mean Squared Error (MSE)	incorrect	
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 statement is CORRECT?	Missing values and outliers should both 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	Outliers should always be replaced or removed.	incorrect	
MC	Which statement is CORRECT?	The geodesic represents the longest path between two nodes.	incorrect	Data stewards can request data scientists to check or complete the value of a field.	incorrect	Data stewards are the data quality experts who oversee assessing data quality by performing extensive and regular data quality checks.	correct	Data preprocessing activities such as handling missing values, duplicate data or outliers are preventive measures for dealing with data quality issues.	incorrect