Data Mining and Business Intelligence (2170715) MCQs

MCQs of Data PreProcessing

Showing 11 to 18 out of 18 Questions
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11.

In real world multidimensional view of data mining, The major dimensions are data, knowledge, technologies, and _____

(a)

Methods
(b)

Applications
(c)

Tools
(d)

Files
Answer:

Option (b)

12.

An _____ is a data field, representing a characteristic or feature of a data object.

(a)

Method
(b)

Variable
(c)

Task
(d)

Attribute 
Answer:

Option (d)

13.

The values of a _____ attribute are symbols or names of things.

(a)

Ordinal
(b)

Nominal
(c)

Ratio
(d)

Interval
Answer:

Option (b)

14.

“Data about data” is referred to as _____

(a)

Information
(b)

Database
(c)

Metadata
(d)

File
Answer:

Option (c)

15.

______ partitions the objects into different groups.

(a)

Mapping
(b)

Clustering
(c)

Classification
(d)

Prediction 
Answer:

Option (b)

16.

In _____, the attribute data are scaled so as to fall within a smaller range, such as -1.0 to 1.0, or 0.0 to 1.0.

(a)

Aggregation
(b)

Binning
(c)

Clustering
(d)

Normalization
Answer:

Option (d)

17.

Normalization by ______ normalizes by moving the decimal point of values of attributes.

(a)

Z-Score
(b)

Z-Index
(c)

Decimal Scaling
(d)

Min-Max Normalization
Answer:

Option (c)

18.

_______ is a top-down splitting technique based on a specified number of bins.

(a)

Normalization
(b)

Binning
(c)

Clustering
(d)

Classification
Answer:

Option (b)

Showing 11 to 18 out of 18 Questions
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