Data Analytics
Chapter Exam Questions
Course Introduction
Data Analytics is an interdisciplinary course that introduces students to the concepts, tools, and techniques used to collect, process, and analyze data for informed decision-making. The course covers essential topics such as data visualization, data mining, statistical analysis, and predictive modeling, while emphasizing practical applications across various industries. Students will gain hands-on experience with popular software tools and programming languages used in the field, learn how to interpret complex datasets, and develop insights to solve real-world problems. By the end of the course, students will possess the analytical skills necessary to transform raw data into meaningful information and actionable strategies.
Recommended Textbook
Decision Support and Business Intelligence Systems 9th Edition by Efraim Turban
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2
Chapter 1: Decision Support Systems and Business Intelligence
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Q1) According to Mintzberg's ten managerial roles,a ________ is responsible for the motivation and activation of subordinates.
A) leader
B) figurehead
C) liason
D) spokesperson
Answer: A
Q2) Decision support systems are computer-based support systems for management decision makers who deal with ________ problems.
Answer: semistructured
Q3) A BI system has three major components: a <i>data warehouse</i> with source data; <i>business performance management (BPM)</i>for monitoring and analyzing performance; and a <i>user interface</i> such as a dashboard.
A)True
B)False
Answer: False
Q4) ________ involves transforming the real-world problem into an appropriate prototype structure.
Answer: Modeling
Page 3
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Chapter 2: Decision Making, Systems, Modeling, and Support
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Q1) A ________ is a simplified representation or abstraction of reality.
Answer: model
Q2) The Museum of Natural History in Aarhus,Denmark uses ________ to collect detailed information about visitors' use of the exhibits to help determine visitors' behavior to identify high-demand exhibits.
A) group decision systems
B) algorithms
C) RFID
D) expert systems
Answer: C
Q3) ________ is synonymous with the whole process of management.
Answer: Decision making
Q4) Groupthink among decision makers can help lead to the best decisions.
A)True
B)False
Answer: False
Q5) ________ are the descriptive representations of decision-making situations that we form in our heads and think about.
Answer: Mental models
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Chapter 3: Decision Support Systems Concepts,
Methodologies, and Technologies:
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Q1) User interface of a DSS includes not only the hardware and software but also factors that deal with ease of use,accessibility,and human-machine interactions.
A)True
B)False
Answer: True
Q2) Explain the role,components,and importance of the user interface (dialog)subsystem.
Answer: The user interface covers all aspects of communication between a user and the DSS or any MSS.It includes the hardware,software,and factors that deal with ease of use and accessibility.The user interface is one of the most important components because it determines the systems' power,flexibility,and ease-of-use.A difficult user interface is one of the major reasons managers for system failures.
Q3) ________ are generally utilized to analyze decision-making situations and make a DSS different from most MIS.
Answer: models
Q4) An ________ allows the manager to benefit from the decision support system without actually having to use the keyboard.
Answer: intermediary
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Chapter 4: Modeling and Analysis
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Q1) What is an influence diagram? Name a benefit of influence diagrams.
Q2) Which of the following models takes a single snapshot of a situation where everything occurs in a single interval?
A) Sliced model
B) Snapshot model
C) Stationary model
D) Static model
Q3) A(n)________ is a model based management system constructed in an object-oriented environment.
Q4) An influence diagram is a graphical representation of a model; that is,it is a model of a model.
A)True
B)False
Q5) List the type of relationships sensitivity analysis study can test.
Q6) ________ conveniently organize information and knowledge in a systematic,tabular manner to prepare it for analysis.
Q7) List the steps involved in the simulation process.
Q8) The allocation of resources in a linear programming problem is usually restricted by limitations and requirements called ________.
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Chapter 5: Data Mining for Business Intelligence
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Q1) Identify and describe the two types of numerical data.Give an example of each.
Q2) List the six steps in the CRISP-DM Data Mining Process.
Q3) The variable <i>marital status</i> can be categorized using the codes (1)single, (2)married,and (3)divorced.These codes are examples of ordinal data.
A)True
B)False
Q4) In order to be applied successfully,a data mining study must be viewed as a set of automated software tools and techniques.
A)True
B)False
Q5) ________ measures the extent of uncertainty or randomness in a dataset.
Q6) Using existing and relevant data,data mining builds models to identify ________ among the attributes presented in the dataset.
Q7) ________ data mining begins with a proposition by the user,who then seeks to validate the truthfulness of the proposition
Q8) Explain the simple split methodology for classification.Explain the advantages of the k-fold cross-validation methodology over the simple split methodology.
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Chapter 6: Artificial Neural Networks for Data Mining
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Q1) A ________ is able to increase or decrease the strength of the connection from neuron to neuron.
Q2) Which of the following is not a consideration in selecting a neural network structure?
A) Selection of a topology
B) Determination of input nodes
C) Determination of output nodes
D) Determination of weighting functions
Q3) A neural network is composed of processing elements organized in different ways to form the network's ________.
Q4) Which of the following procedure is used to break datasets into different pairs of training and testing sets?
A) resampling
B) sampling
C) trial and error
D) random
Q5) When information is processed,many of the processing elements of neural network perform their computations at the same time,which is called ________ processing.
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Chapter 7: Text and Web Mining
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Q1) Why does the Web pose great challenges for effective and efficient knowledge discovery?
A) The Web search engines are indexed-based.
B) The Web is too dynamic.
C) The Web is too specific to a domain.
D) The Web infrastructure contains hyperlink information.
Q2) ________ is the discovery and analysis of interesting and useful information from the Web,about the Web,and usually though Web-based tools.
Q3) At a very high level,the first of three consecutive tasks in the text mining process is to establish the ________,which is a list of organized documents.
Q4) List three business applications of Web mining.
Q5) Analysis of the information collected by Web servers can help better understand user behavior.Analysis of this data is called ________ analysis.
Q6) One of the main approaches to text classification is ________ in which an expert's knowledge is encoded into the system either declaratively or in the form of procedural classification rules.
Q7) Describe a marketing application of text mining.
Q8) The term "stop-words" are used by text mining to ________ commonly used words.
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Chapter 8: Data Warehousing
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Q1) Data warehouse is a(n)________,integrated,time-variant,nonvolatile collection of data in support of management's decision making process.
A) analysis-oriented
B) object-oriented
C) subject-oriented
D) model-oriented
Q2) Data often are fragmented in distinct operational systems,so managers often make decisions with partial information at best.________ cuts through this obstacle by accessing,integrating,and organizing key operational data in a form that is consistent,reliable,timely,and readily available where needed.
Q3) According to conventional wisdom,independent data marts are a poor architectural solution.
A)True
B)False
Q4) There are three main types of data warehouses,which are data marts,operational data stores,and enterprise data warehouses.
A)True
B)False
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Chapter 9: Business Performance Management
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Q1) Dashboards and ________ both provide visual displays of important information that is consolidated and arranged on a single screen so that information can be digested at a single glance and easily explored.
Q2) Which of the following identifies and prioritizes the key customer,market,competitor,government,demographic,or actually impacting the company?
A) SWOT
B) SWAT
C) ROA
D) CSF
Q3) Both balanced Scorecards and Six Sigma are performance management tools and methodologies.
A)True
B)False
Q4) An operational plan translates an organization's strategic objectives and goals into a set of well-defined tactics and initiatives,resource requirements,and expected results for some future time period,usually,but not always,a month.
A)True
B)False
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Chapter 10: Collaborative Computer-Supported Technologies
and
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Q1) With ________,group members can work on the same document which is shown on the PC screen of each participant.
A) data conferencing
B) whiteboards
C) instant messaging
D) screen sharing
Q2) An ________ is a form of GSS that supports anytime/anyplace meetings.
Q3) ________ are methods used to increase some of the benefits of meetings and eliminate or reduce some of the losses.
Q4) Groupware products are either stand-alone products that support only one task,such as videoconferencing,or are integrated kits consisting of several tools.
A)True
B)False
Q5) In collaborative work,team members are frequently in different locations.By using ________ software,group members can work on the same document,which is shown on the PC screen of each participant.
Q6) List and describe the three categories in Groupware products.
Q7) Describe the four cells frameworks of time and space in communications.
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Chapter 11: Knowledge Management
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Q1) There are several essential "preconditions" for effective knowledge management to succeed.Which of the following is a precondition?
A) a knowledge infrastructure consisting of technology, structure, and culture
B) a knowledge process architecture of acquisition, conversion, application, and protection
C) economies of scale in obtaining information from external providers
D) A and B
Q2) Since knowledge management (KM)first appeared in the mid-1990s,almost all organizations have invested in KM systems and reaped significant benefits.
A)True
B)False
Q3) A(n)________ is a group of people in an organization with a common professional interest.
Q4) Organizational learning and memory depend more on technology than on the people issues.
A)True
B)False
Q5) Identify and list reasons why people do not want to share knowledge.
Q6) Describe the Seven Principles for designing successful communities of practice.
13
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Chapter 12: Artificial Intelligence and Expert Systems
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Q1) ________ is a goal-driven approach in which you start from an expectation of what is going to happen and then seek evidence that supports or contradicts your expectation.
Q2) An ________ is a system that uses human knowledge captured in a computer to solve problems that ordinarily require human expertise.
Q3) Most technologies used to support decision situations where expertise is required use qualitative and/or mathematical models to provide the needed support.
A)True
B)False
Q4) Describe the characteristics of expertise.
Q5) Which of the following is not a typical type of problems recorded on blackboard?
A) Plan
B) Agenda
C) Solution
D) Key
Q6) An ________ is an expert system without the knowledge in the knowledge base.
Q7) ________ is a data-driven approach that starts from available information or from a basic idea,which is used to try to draw conclusions.
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Chapter 13: Advanced Intelligent Systems
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Q1) Human learning is a combination of many complicated cognitive processes.Which of the following is not included in human's cognitive processes?
A) Induction
B) Simulation
C) Deduction
D) Analogy
Q2) What are the advantages of using case-based reasoning?
Q3) A hyperplane is a geometric concept commonly used to describe the separation surface between different classes of things within a multidimensional space.
A)True
B)False
Q4) An advantage of SVM models is that they tend to take less time to develop compared to other predictive models.
A)True
B)False
Q5) What are genetic algorithms?
Q6) ________ allows computers to examine historical cases and generate rules that can be chained to solve new problems.
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Chapter 14: Management Support Systems: Emerging
Trends and Impacts
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Q1) One of the applications of the massive amounts of data that are generated by RFID is in supply-chain management.
A)True
B)False
Q2) The most commonly used data representation for RFID technology is the:
A) Common Product Code (CPC)
B) Universal Product Code (UPC)
C) Electronic Product Code (EPC)
D) Standard Product Code (SPC)
Q3) RFID generates major data streams ready for analysis through BI technologies.Another massive data source is emerging,along with the data mining technologies to make sense of the data,which is referred to as ________.
A) triangulation
B) location-enabled services
C) reality mining
D) sensor mining
Q4) Many people recognize that MSS tools are effective and efficient means to increase ________ even though the privacy of many innocent people is compromised.
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