Ch8 – Data Mining Flashcards
Unlock all answers in this set
Unlock answersquestion
The R" in RFM analysis stands for:"
answer
recent.
question
Business Intelligence (BI) systems obtain their data by which of the following means?
answer
All of these. (Read and process data from an operational database, Process data purchased from data vendors, Process extracts from operational databases, Both read and process data from an operational database and Process extracts from operational databases)
question
RFM analysis analyzes and ranks customers based on:
answer
their purchasing patterns.
question
Which of the following are true about data mining applications?
answer
Both they use sophisticated mathematical techniques and they use sophisticated statistical techniques.
question
We have obtained access to the company's operational data. We examine 50 records for customers with phone numbers that should use the current area code of 345. Of these 50 records, we find 10 that still use an older area code of 567. This is an example of:
answer
inconsistent data.
question
A data warehouse database differs from an operational database because:
answer
data warehouse data are often stored in a dimensional database.
question
The term drill down means the user wants to:
answer
get more details.
question
Market basket analysis is:
answer
a data mining technique.
question
We have done an RFM analysis on our customer data. John Smith has a score of 5 1 1." This means that John:"
answer
hasn't ordered recently, but orders a lot when he orders.
question
The reports generated by a reporting system can be classified as:
answer
Both static and dynamic.
question
Data mining techniques are used to find patterns and relationships that can be used to:
answer
Both classify and predict
question
A BI reporting system:
answer
Both creates meaningful information from disparate data sources and delivers information to users on a timely basis.
question
Business Intelligence (BI) systems fall into which of the following categories?
answer
Both Reporting and Data mining.
question
We have obtained access to the company's operational data. In one record, we find that a customer's age has been record as 337". This is an example of:"
answer
Dirty data.
question
A report generated by a reporting system is delivered to the appropriate users via an electronic display customized for each user. This system uses which of the following media?
answer
Digital dashboard
question
Business Intelligence (BI) systems do which of the following?
answer
Both analyze current and past activities and Predict future events
question
A data mart differs from a data warehouse in that:
answer
All of these (data mart users do not have the data management expertise of data warehouse employees, it has a smaller database, and it deals with a particular component or functional area of the business,
question
OLAP stands for:
answer
Online Analytical Processing
question
Which of the following is a reason that operational data are difficult to read?
answer
All of these (Missing values, Dirty data, and Non-integrated data.)
question
RFM scores commonly range from ___, with ___ being the high" or "most desirable" score."
answer
1 to 5, 1
question
Which of the following is a common unsupervised data mining technique?
answer
Cluster analysis
question
Data mining applications are used to accomplish which of the following tasks?
answer
All of these (Perform what-if analysis, make predictions, and facilitate decision making).
question
Which of the following is a common supervised data mining technique?
answer
Regression analysis
question
Business Intelligence (BI) reporting systems can do which of the following operations?
answer
Both filter data and group data.
question
One Business Intelligence (BI) reporting system that uses extensions to SQL is:
answer
OLAP.
