Data Mining and Business Intelligence (2170715) MCQs

MCQs of Data PreProcessing

Showing 1 to 10 out of 18 Questions
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1.

Data selection is _____

(a)

The actual discovery phase of a knowledge discovery process
(b)

The stage of selecting the right data for a KDD process
(c)

A subject-oriented integrated time-variant non-volatile collection of data in support of management
(d)

Record oriented classes finding
Answer:

Option (b)

2.

To remove noise and inconsistent data ____ is needed.

(a)

Data Cleaning
(b)

Data Transformation
(c)

Data Reduction
(d)

Data Integration
Answer:

Option (a)

3.

Multiple data sources may be combined is called as _____

(a)

Data Reduction
(b)

Data Cleaning
(c)

Data Integration
(d)

Data Transformation
Answer:

Option (c)

4.

A _____ is a collection of tables, each of which is assigned a unique name which uses the entity-relationship (ER) data model.

(a)

Relational database
(b)

Transactional database
(c)

Data Warehouse
(d)

Spatial database
Answer:

Option (a)

5.

Relational data can be accessed by _____ written in a relational query language.

(a)

Select
(b)

Queries
(c)

Operations
(d)

Like
Answer:

Option (b)

6.

_____ studies the collection, analysis, interpretation or explanation, and presentation of data.

(a)

Statistics
(b)

Visualization
(c)

Data Mining
(d)

Clustering
Answer:

Option (a)

7.

______ investigates how computers can learn (or improve their performance) based on data.

(a)

Machine Learning
(b)

Artificial Intelligence
(c)

Statistics
(d)

Visualization
Answer:

Option (a)

8.

 _____ is the science of searching for documents or information in documents.

(a)

Data Mining
(b)

Information Retrieval
(c)

Text Mining
(d)

Web Mining
Answer:

Option (b)

9.

Data often contain _____

(a)

Target Class
(b)

Uncertainty
(c)

Methods
(d)

Keywords 
Answer:

Option (b)

10.

The data mining process should be highly ______

(a)

On Going
(b)

Active
(c)

Interactive
(d)

Flexible
Answer:

Option (c)

Showing 1 to 10 out of 18 Questions
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