Question 1

What is the process of analyzing data to extract information not offered by the raw data alone?

Accepted Answer

This is the definition of data mining.

Question 2

Within the beginning stage of the data warehouse models process,which of the following are included in the internal databases?

Accepted Answer

Within the beginning stage of the data warehouse models process,marketing,sales,inventory,& billing are included in the internal databases.

Question 3

What is web mining?

Accepted Answer

This is the definition of web mining.

Question 4

What are the primary differences between a data warehouse and a data mart?

Accepted Answer

The primary differences between a data warehouse and data marts is think of a data warehouse as having a more organizational focus,and data mart as having a functional focus.

Question 5

What is the technique used to divide information sets into mutually exclusive groups such that the members of each group are as close together as possible to one another and the different groups are as far apart as possible?

Accepted Answer

This is the definition of cluster analysis.

Question 6

Which of the following contains a subset of data warehouse information?

Accepted Answer

A data mart contains a subset of data warehouse information.

Question 7

Which of the following is not a common form of data mining?

Accepted Answer

Data mining approaches decision making with a few different activities in mind include classification,estimation,affinity grouping,and clustering.

Question 8

What are the two main objectives associated with data mining?

Accepted Answer

The two main objectives of data mining are uncovering trends & patterns.

Question 9

What determines the accuracy and completeness of organizational data?

Accepted Answer

This is the definition of a data quality audit.

Question 10

Which of the below is not included as an information cleansing activity?

Accepted Answer

Information cleansing activities include 1)missing records or attributes,2)redundant records,3)missing keys or other required data,4)erroneous relationships or references,and 5)inaccurate or incomplete data.

Question 11

Which of the following is the common term for the representation of multidimensional information?

Accepted Answer

This is the definition of a cube.

Question 12

Which of the following statements is true?

Accepted Answer

The more complete and accurate an organization wants to get its information,the more it costs.

Question 13

What is the ultimate outcome of a data warehouse?

Accepted Answer

Within the ending stage of the data warehouse models process,after the data warehouse step,the end results are marketing data mart,inventory data mart,and sales data mart.

Question 14

What analyzes unstructured data to find trends and patterns in words and sentences?

Accepted Answer

This is the definition of text mining.

Question 15

Which of the following forms of data mining assigns records to one of a predefined set of classes?

Accepted Answer

This is the definition of classification.

Question 16

What are the three common forms for mining structured and unstructured data?

Accepted Answer

The three common forms for mining structured and unstructured data include cluster analysis,association detection,and statistical analysis.

Question 17

What is another term for data that does not exist in a fixed location?

Accepted Answer

This is the definition of unstructured data.

Question 18

What is another term for information cleansing?

Accepted Answer

Information cleansing or scrubbing is a process that weeds out and fixes or discards inconsistent,incorrect,or incomplete information.

Question 19

Which of the following uses a variety of techniques to find patterns and relationships in large volumes of information that predict future behavior and guide decision making?

Accepted Answer

This is the definition of data-mining tools.

Question 20

What is another term for data that is already contained in a database or a spreadsheet?

Accepted Answer

This is the definition of structured data.

Quiz 6: Data: Business Intelligence