MIS 523 - Midterm Full List
The HP Case illustrates that after analytics are chosen to solve a problem, building a new decision model from scratch or purchasing one may not always be the best approach. Why is that?
A related tool requiring slight modification may already exist.
The data mining algorithm type used for classification somewhat resembling the biological neural networks in the human brain is
ANNs
Which data mining process/methodology is thought to be the most comprehensive, according to kdnuggets.com rankings?
CRISP-DM
What application is MOST dependent on text analysis of transcribed sales call center notes and voice conversations with customers?
CRM
What is a major drawback to the basic majority voting classification in kNN?
Classes with more frequent examples tend to dominate prediction.
Which of the following statements about cognitive limits of organizational decision makers is true?
Cognitive limits affect both the recall and use of data by decision makers.
The model management subsystem provides the system's analytical capabilities and appropriate software management. Which of the following is NOT an element of the model management subsystem?
DBMS
The software that manages the DSS database and enables relevant data to be accessed by DSS application programs is called
DBMS
Which of the following is a data mining myth?
Data mining requires a separate, dedicated database
How does the use of cloud computing affect the scalability of a data warehouse?
Hardware resources are dynamically allocated as use increases.
How is objectivity handled in sentiment analysis?
It is identified and removed as facts are not sentiment
In answering the question "Which customers are most likely to click on my online ads and purchase my goods?", you are most likely to use which of the following analytic applications?
Propensity to buy
Which of the following statements about Big Data is true?
Pure Big Data systems do not involve fault tolerance.
Which of the following online analytical processing (OLAP) technologies does NOT require the precomputation and storage of information?
ROLAP
In the student retention case study, of the four data mining methods used, which was the most accurate?
SVM
In sentiment analysis, which of the following is an implicit opinion?
The customer service I got for my TV was laughable
How are descriptive analytics methods different from the other two types?
They answer "what-is?" queries, not "what will be?" queries.
Neural networks have been described as "biologically inspired." What does this mean?
They crudely model the biological makeup of the human brain
What do voice of the market (VOM) applications of sentiment analysis do?
They examine customer sentiment at the aggregate level
For DSS, why are semistructured or unstructured decisions the main focus of support?
They include human judgment, which is incorporated into DSS
In the Blue Cross Blue Shield case study, speech analytics were used to identify "confusion" calls by customers. What was true about these calls?
They were not documented by customer service reps for speech analytics
Which type of question does visual analytics seeks to answer?
Why did it happen?
In text analysis, what is a lexicon?
a catalog of words, their synonyms, and their meanings
What is Six Sigma?
a methodology aimed at reducing the number of defects in a business process
All of the following may be viewed as decision support systems EXCEPT
a retail sales system that processes customer sales transactions.
When you tell a story in a presentation, all of the following are true EXCEPT
a well-told story should have no need for subsequent discussion
Understanding customers better has helped Amazon and others become more successful. The understanding comes primarily from
analyzing the vast data amounts routinely collected
In data mining, finding an affinity of two products to be commonly together in a shopping cart is known as
association rule mining
Kaplan and Norton developed a report that presents an integrated view of success in the organization called
balanced scorecard-type reports
Why are analytical decision making skills now viewed as more important than interpersonal skills for an organization's managers?
because analytical-oriented managers produce better results over time
Why is the customer perspective important in the balanced scorecard methodology?
because dissatisfied customers will eventually hurt the bottom line
Why is a performance management system superior to a performance measurement system?
because measurement alone has little use without action
What is the main reason parallel processing is sometimes used for data mining?
because of the massive data amounts and search efforts involved
Why is sensitivity analysis frequently used for artificial neural networks?
because some consequences of mistakes by the network might be fatal, so justification may matter
Sentiment classification usually covers all the following issues EXCEPT
biometric identification of the consumer expressing the sentiment
All of the following statements about data mining are true EXCEPT
building the model takes the most time and effor
Which component of a reporting system contains steps detailing how recorded transactions are converted into metrics, scorecards, and dashboards?
business logic
In text mining, tokenizing is the process of
categorizing a block of text in a sentence
What data discovery process, whereby objects are categorized into predetermined groups, is used in text mining?
classification
Which broad area of data mining applications analyzes data, forming rules to distinguish between defined classes?
classification
In which stage of extraction, transformation, and load (ETL) into a data warehouse are anomalies detected and corrected?
cleanse
Which broad area of data mining applications partitions a collection of objects into natural groupings with similar features?
clustering
In the Cabela's case study, what types of models helped the company understand the value of customers, using a five-point scale?
clustering and association models
In the student retention case study, which of the following variables was MOST important in determining whether a student dropped out of college?
completed credit hours and hours enrolled
In the Whirlpool case study, the company sought to better understand information coming from which source?
customer emails
Business intelligence (BI) can be characterized as a transformation of
data to information to decisions to actions.
The deployment of large data warehouses with terabytes or even petabytes of data been crucial to the growth of decision support. All the following explain why EXCEPT
data warehouses have enabled the collection of decision makers in one place.
The "single version of the truth" embodied in a data warehouse such as Capri Casinos' means all of the following EXCEPT
decision makers have unfettered access to all data in the warehouse.
All of the following statements about decision style are true EXCEPT
decision styles are consistent among top managers.
Which of the following activities permeates nearly all managerial activity?
decision-making
The Web can play a significant role in making large amounts of information available to decision makers. Decision makers must be careful that this glut of information does not
detract from the quality and speed of decision making
When using support vector machines, in which stage do you select the kernel type (e.g., RBF, Sigmoid)?
developing the model
All of the following are challenges associated with natural language processing EXCEPT
dividing up a text into individual words in English
When querying a dimensional database, a user went from summarized data to its underlying details. The function that served this purpose is
drill down
All of the following statements about the decision implementation phases are true EXCEPT
employees need only the decisions from the CEO, not the rationale.
What is the fundamental challenge of dashboard design?
ensuring that the required information is shown clearly on a single screen
Which approach to data warehouse integration focuses more on sharing process functionality than data across systems?
enterprise application integration
While Microsoft Excel can be an efficient tool for developing a DSS, compared to using a programming language like C++, a shortcoming of Excel is
errors can creep into formulas somewhat easily
For those executives who do not have the time to go through lengthy reports, the best alternative is the
executive summary
Which data warehouse architecture uses metadata from existing data warehouses to create a hybrid logical data warehouse comprised of data from the other warehouses?
federated architecture
Which of the following is NOT an example that falls within the four major categories of business environment factors for today's organizations?
fewer government regulations
For how long do SVM models continue to be accurate and actionable?
for as long as the behavior of the domain stays the same
All of the following statements about metadata are true EXCEPT
for most organizations, data warehouse metadata are an unnecessary expense.
Which of the following is LEAST related to data/information visualization?
graphic artwork
All of the following are benefits of hosted data warehouses EXCEPT
greater control of data
Which data warehouse architecture uses a normalized relational warehouse that feeds multiple data marts?
hub-and-spoke data warehouse architecture
Data warehouses provide direct and indirect benefits to using organizations. Which of the following is an indirect benefit of data warehouses?
improved customer care
Which kind of data warehouse is created separately from the enterprise data warehouse by a department and not reliant on it for updates?
independent data mart
Which element in an artificial neural network roughly corresponds to a dendrite in a human brain?
input
Identifying and preventing incorrect claim payments and fraudulent activities falls under which type of data mining applications?
insurance
All of the following are true about in-database processing technology EXCEPT
it is the same as in-memory storage technology
What does the scalability of a data mining method refer to?
its ability to construct a prediction model efficiently given a large amount of data
What does the robustness of a data mining method refer to?
its ability to overcome noisy data to make somewhat accurate predictions
Which of the following statements is more descriptive of active data warehouses in contrast with traditional data warehouses?
large numbers of users, including operational staffs
For the majority of organizations, evaluating the credit rating of a potential business partner is a(n)
managerial control decision
All the following statements about hidden layers in artificial neural networks are true EXCEPT
many top commercial ANNs forgo hidden layers completely
What class of DSS incorporates simulation and optimization?
model-driven DSS
All of the following statements about risk in decision making are correct EXCEPT
most decision makers are pessimistic about decision outcomes.
In developing an artificial neural network, all of the following are important reasons to pre-select the network architecture and learning method EXCEPT
most neural networks need special purpose hardware, which may be absent
The Internet emerged as a new medium for visualization and brought all the following EXCEPT
new forms of computation of business logic
The data field "ethnic group" can be best described as
nominal data
In text mining, which of the following methods is NOT used to reduce the size of a sparse matrix?
normalizing word frequencies
What form of decision theory assumes that decision makers are rational beings who always seek to strictly maximize economic goals?
normative decision theory
Prescriptive BI capabilities are viewed as more powerful than predictive ones for all the following reasons EXCEPT
only prescriptive BI capabilities have monetary value to top-level managers.
What is the management feature of a dashboard?
operational data that identify what actions to take to resolve a problem
In the Magpie Sensing case study, the automated collection of temperature and humidity data on shipped goods helped with various types of analytics. Which of the following is an example of prescriptive analytics?
optimal temperature setting
In the design phase of decision making, selecting a principle of choice or criteria means that
optimality is not the only criterion for acceptable solutions
Which of the following BEST enables a data warehouse to handle complex queries and scale up to handle many more requests?
parallel processing
When using support vector machines, in which stage do you transform the data?
preprocessing the data
The data field "salary" can be best described as
ratio data
The fact that many organizations share many similar problems means that in sourcing a DSS, it is often wiser to acquire a(n)
ready-made DSS.
When a DSS is built, used successfully and integrated into the company's business processes, it was most likely built for a(n)
recurrent decision
Using the k-nearest neighbor machine learning algorithm for classification, larger values of k
reduce the effect of noise on the classification
In text mining, stemming is the process of
reducing multiple words to their base or root
The k-nearest neighbor machine learning algorithm (kNN) is
regarded as a "lazy" learning method.
Prediction problems where the variables have numeric values are most accurately defined as
regressions
Third party providers of publicly available datasets protect the anonymity of the individuals in the data set primarily by
removing identifiers such as names and social security numbers
Backpropagation learning algorithms for neural networks are
required to have error tolerance set in advance
Organizations counter the pressures they experience in their business environments in multiple ways. Which of the following is NOT an effective way to counter these pressures?
retroactive actions
Which of these applications will derive the LEAST benefit from text mining?
sales transaction files
All of the following statements about balanced scorecards and dashboards are true EXCEPT
scorecards are best for real-time tracking of a marketing campaign.
Business environments and government requirements are becoming more complex. All of the following actions to manage this complexity would be appropriate EXCEPT
seeking new ways to avoid government compliance.
What types of documents are BEST suited to semantic labeling and aggregation to determine sentiment orientation?
small- to medium-sized documents
Active data warehousing can be used to support the highest level of decision making sophistication and power. The major feature that enables this in relation to handling the data is
speed of data transfer
When representing data in a data warehouse, using several dimension tables that are each connected only to a fact table means you are using which warehouse structure?
star schema
Identifying the target of an expressed sentiment is difficult for all the following reasons EXCEPT
strong sentiments may be generated by a computer, not a person
For the majority of organizations, a daily accounts receivable transaction is a(n)
structured decision.
Operational or transaction databases are product oriented, handling transactions that update the database. In contrast, data warehouses are
subject-oriented and nonvolatile
When an Accounts Payable department improves their information system resulting in faster payments to vendors, without the Accounts Receivable Department doing the same, leading to a cash flow crunch, what can we say happened in decision-theoretic terms?
suboptimization
A search for alternatives occurs in which phase of the decision making/action model?
the design phase
The user communicates with and commands the DSS through the user interface subsystem. Researchers assert that some of the unique contributions of DSS are derived from
the intensive interaction between the computer and the decision maker
In the research literature case study, the researchers analyzing academic papers extracted information from which source?
the paper abstract
All of the following statements about data mining are true EXCEPT
the process aspect means that data mining should be a one-step process to results
Big Data often involves a form of distributed storage and processing using Hadoop and MapReduce. One reason for this is
the processing power needed for the centralized model would overload a single computer.
In estimating the accuracy of data mining (or other) classification models, the true positive rate is
the ratio of correctly classified positives divided by the total positive count
Dashboards can be presented at all the following levels EXCEPT
the visual cube level
All of the following are disadvantages/limitations of the SVM technique EXCEPT
their accuracy is poor in many domains compared to neural networks
All of the following are true about external reports between businesses and the government EXCEPT
their primary focus is government
Support vector machines are a popular machine learning technique primarily because of
their superior predictive power and their theoretical foundation
Benefits of the latest visual analytics tools, such as SAS Visual Analytics, include all of the following EXCEPT
they explore massive amounts of data in hours, not days
In the Coors case study, why was a genetic algorithm paired with neural networks in the prediction of beer flavors?
to complement the neural network by reducing the error term
When Sabre developed their Enterprise Data Warehouse, they chose to use near-real-time updating of their database. The main reason they did so was
to provide up-to-date executive insights
In which stage of extraction, transformation, and load (ETL) into a data warehouse are data aggregated?
transformation
All of the following are benefits of using models for decision support EXCEPT
using well-designed models always guarantees you success in implementation.
In the Magpie Sensing case study, the automated collection of temperature and humidity data on shipped goods helped with various types of analytics. Which of the following is an example of predictive analytics?
warning of an open shipment seal
What type of user interface has been recognized as an effective DSS GUI because it is familiar, user friendly, and a gateway to almost all sources of necessary information and data?
web browsers
Which element in an artificial neural network roughly corresponds to a synapse in a human brain?
weight
Contextual metadata for a dashboard includes all the following EXCEPT
which operating system is running the dashboard server software
Inputs to speech analytics include all of the following EXCEPT
written transcripts of calls to service centers
