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	Bootstrapping refers to:	Drawing samples without replacement.	incorrect	Drawing samples with replacement.	correct	
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?	Data owners are the data quality experts who are in charge of assessing data quality by performing extensive and regular data quality checks. 	incorrect	Quality of data is key to the success of any analytical exercise since it has a direct and measurable impact on the quality of the analytical model and hence its economic value.	correct	Data preprocessing activities such as handling missing values, duplicate data or outliers are preventive measures for dealing with data quality issues.	incorrect	Data stewards can request data scientists to check or complete the value of a field.	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	Featurization in the context of neural networks refers to...	making features (=inputs) out of the network characteristics.	correct	adding more local features to the data set.	incorrect	selecting the most predictive features.	incorrect	adding more nodes to the network.	incorrect	
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:	Good Risk	incorrect	Bad Risk	correct	
MC	To guarantee maximum independence and organizational impact of analytics, it is important that...	a Chief Data Officer or Chief Analytics officer is added to the executive committee who directly reports to the CEO.	correct	the Chief Data Officer (CDO) or Chief Analytics Officer (CAO) reports to the CIO or CFO.	incorrect	analytics is supervised only locally in the business units. 	incorrect	the CIO takes care of all analytical responsibilities.	incorrect	
MC	OLAP (On-Line Analytical Processing) can help in which of the following steps of the analytics process?	Data transformation	incorrect	Data visualization	correct	Data denormalizatio	incorrect	Data collection	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 Chief Data Officer (CDO) or Chief Analytics Officer (CAO) reports to the CIO or CFO.	incorrect	the CIO takes care of all analytical responsibilities.	incorrect	a Chief Data Officer or Chief Analytics officer is added to the executive committee who directly reports to the CEO.	correct