Data Mining (3160714) MCQs

MCQs of Data Pre-processing

Showing 1 to 10 out of 29 Questions
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1.

Find the range for given data 40, 30, 43, 48, 26, 50, 55, 40, 34, 42, 47, 50

(a)

19
(b)

29
(c)

35
(d)

49
Answer:

Option (b)

2.

The number that occurs most often within a set of data called as ______

(a)

Mean
(b)

Median
(c)

Mode
(d)

Range
Answer:

Option (c)

3.

The mean is the ________ of a dataset.

(a)

Average
(b)

Middle
(c)

Central
(d)

Ordered
Answer:

Option (a)

4.

Which are not related to Ratio Attributes?

(a)

Age Group 10-20, 30-50, 35-45 (in Years)
(b)

Mass 20-30 kg, 10-15 kg
(c)

Areas 10-50, 50-100 (in Kilometres)
(d)

Temperature 10°-20°, 30°-50°, 35°-45°
Answer:

Option (d)

5.

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

(a)

Normalization
(b)

Clustering
(c)

Binning
(d)

Classification
Answer:

Option (c)

6.

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)

7.

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)

8.

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

(a)

Ordinal
(b)

Nominal
(c)

Ratio
(d)

Interval
Answer:

Option (b)

9.

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)

10.

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)

Showing 1 to 10 out of 29 Questions
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